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824 lines
15 KiB
824 lines
15 KiB
/*++
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Copyright (c) 1992 Microsoft Corporation
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Module Name:
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dndisp.c
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Abstract:
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DOS-based NT setup program video display routines.
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Author:
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Ted Miller (tedm) 30-March-1992
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Revision History:
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--*/
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#include "winnt.h"
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#include <string.h>
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#define SCREEN_WIDTH 80
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#define SCREEN_HEIGHT 25
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#define STATUS_HEIGHT 1
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#define STATUS_LEFT_MARGIN 2
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#define HEADER_HEIGHT 3
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//
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// Display attributes
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//
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#define ATT_FG_BLACK 0
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#define ATT_FG_BLUE 1
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#define ATT_FG_GREEN 2
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#define ATT_FG_CYAN 3
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#define ATT_FG_RED 4
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#define ATT_FG_MAGENTA 5
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#define ATT_FG_YELLOW 6
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#define ATT_FG_WHITE 7
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#define ATT_BG_BLACK (ATT_FG_BLACK << 4)
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#define ATT_BG_BLUE (ATT_FG_BLUE << 4)
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#define ATT_BG_GREEN (ATT_FG_GREEN << 4)
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#define ATT_BG_CYAN (ATT_FG_CYAN << 4)
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#define ATT_BG_RED (ATT_FG_RED << 4)
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#define ATT_BG_MAGENTA (ATT_FG_MAGENTA << 4)
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#define ATT_BG_YELLOW (ATT_FG_YELLOW << 4)
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#define ATT_BG_WHITE (ATT_FG_WHITE << 4)
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#define ATT_FG_INTENSE 8
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#define ATT_BG_INTENSE (ATT_FG_INTENSE << 4)
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#define DEFAULT_ATTRIBUTE (ATT_FG_WHITE | ATT_BG_BLUE)
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#define STATUS_ATTRIBUTE (ATT_FG_BLACK | ATT_BG_WHITE)
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#define EDIT_ATTRIBUTE (ATT_FG_BLACK | ATT_BG_WHITE)
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#define EXITDLG_ATTRIBUTE (ATT_FG_RED | ATT_BG_WHITE)
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#define GAUGE_ATTRIBUTE (ATT_BG_BLUE | ATT_FG_YELLOW | ATT_FG_INTENSE)
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// #define USE_INT10
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#ifndef USE_INT10
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//
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// Far address of the screen buffer.
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//
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#define SCREEN_BUFFER ((UCHAR _far *)0xb8000000)
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#define SCREEN_BUFFER_CHR(x,y) *(SCREEN_BUFFER + (2*((x)+(SCREEN_WIDTH*(y)))))
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#define SCREEN_BUFFER_ATT(x,y) *(SCREEN_BUFFER + (2*((x)+(SCREEN_WIDTH*(y))))+1)
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BOOLEAN CursorIsActuallyOn;
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#endif
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//
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// Make these near because they are used in _asm blocks
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//
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UCHAR _near CurrentAttribute;
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UCHAR _near ScreenX;
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UCHAR _near ScreenY;
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BOOLEAN CursorOn;
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VOID
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DnpBlankScreenArea(
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IN UCHAR Attribute,
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IN UCHAR Left,
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IN UCHAR Right,
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IN UCHAR Top,
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IN UCHAR Bottom
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);
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VOID
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DnInitializeDisplay(
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VOID
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)
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/*++
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Routine Description:
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Put the display in a known state (80x25 standard text mode) and
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initialize the display package.
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Arguments:
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None.
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Return Value:
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None.
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--*/
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{
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CurrentAttribute = DEFAULT_ATTRIBUTE;
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CursorOn = FALSE;
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//
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// Set the display to standard 80x25 mode
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//
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_asm {
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mov ax,3 // set video mode to 3
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int 10h
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}
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//
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// Clear the entire screen
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//
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DnpBlankScreenArea(CurrentAttribute,0,SCREEN_WIDTH-1,0,SCREEN_HEIGHT-1);
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DnPositionCursor(0,0);
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#ifndef USE_INT10
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//
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// Shut the cursor off.
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//
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_asm {
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mov ah,2 // function -- position cursor
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mov bh,0 // display page
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mov dh,SCREEN_HEIGHT
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mov dl,0
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int 10h
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}
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CursorIsActuallyOn = FALSE;
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#endif
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}
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VOID
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DnClearClientArea(
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VOID
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)
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/*++
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Routine Description:
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Clear the client area of the screen, ie, the area between the header
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and status line.
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Arguments:
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None.
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Return Value:
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None.
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--*/
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{
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DnpBlankScreenArea( CurrentAttribute,
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0,
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SCREEN_WIDTH-1,
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HEADER_HEIGHT,
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SCREEN_HEIGHT - STATUS_HEIGHT - 1
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);
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DnPositionCursor(0,HEADER_HEIGHT);
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}
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VOID
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DnSetGaugeAttribute(
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IN BOOLEAN Set
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)
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/*++
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Routine Description:
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Prepare for drawing the thermometer portion of a gas gauge.
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Arguments:
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Set - if TRUE, prepare for drawing the thermometer. If FALSE, restore
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the state for normal drawing.
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Return Value:
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None.
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--*/
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{
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static UCHAR SavedAttribute = 0;
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if(Set) {
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if(!SavedAttribute) {
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SavedAttribute = CurrentAttribute;
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CurrentAttribute = GAUGE_ATTRIBUTE;
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}
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} else {
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if(SavedAttribute) {
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CurrentAttribute = SavedAttribute;
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SavedAttribute = 0;
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}
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}
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}
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VOID
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DnPositionCursor(
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IN UCHAR X,
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IN UCHAR Y
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)
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/*++
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Routine Description:
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Position the cursor.
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Arguments:
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X,Y - cursor coords
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Return Value:
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None.
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--*/
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{
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if(X >= SCREEN_WIDTH) {
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X = 0;
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Y++;
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}
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if(Y >= SCREEN_HEIGHT) {
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Y = HEADER_HEIGHT;
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}
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ScreenX = X;
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ScreenY = Y;
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//
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// Invoke BIOS
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//
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_asm {
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mov ah,2 // function -- position cursor
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mov bh,0 // display page
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mov dh,ScreenY
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mov dl,ScreenX
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int 10h
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}
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#ifndef USE_INT10
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CursorIsActuallyOn = TRUE;
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#endif
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}
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VOID
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DnWriteChar(
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IN CHAR chr
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)
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/*++
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Routine Description:
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Write a character in the current attribute at the current position.
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Arguments:
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chr - Character to write
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Return Value:
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None.
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--*/
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{
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if(chr == '\n') {
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ScreenX = 0;
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ScreenY++;
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return;
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}
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#ifdef USE_INT10
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//
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// Position the cursor (turns it on)
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//
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DnPositionCursor(ScreenX,ScreenY);
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//
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// Output the character
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//
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_asm {
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mov ah,9 // function -- write char/attribute pair
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mov al,chr
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mov bh,0 // display page
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mov bl,CurrentAttribute
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mov cx,1 // replication factor
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int 10h
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}
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//
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// If the cursor is supposed to be off, shut it off
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//
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if(!CursorOn) {
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_asm {
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mov ah,2 // function -- position cursor
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mov bh,0 // display page
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mov dh,SCREEN_HEIGHT
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mov dl,0
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int 10h
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}
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}
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#else
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//
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// Don't draw outside the actual screen boundaries
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//
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if ( ( ScreenX < SCREEN_WIDTH ) && ( ScreenY < SCREEN_HEIGHT ) ) {
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SCREEN_BUFFER_CHR(ScreenX,ScreenY) = chr;
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SCREEN_BUFFER_ATT(ScreenX,ScreenY) = CurrentAttribute;
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}
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//
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// shut cursor off if necessary
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//
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if(!CursorOn && CursorIsActuallyOn) {
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CursorIsActuallyOn = FALSE;
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_asm {
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mov ah,2 // function -- position cursor
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mov bh,0 // display page
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mov dh,SCREEN_HEIGHT
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mov dl,0
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int 10h
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}
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}
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#endif
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}
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VOID
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DnWriteString(
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IN PCHAR String
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)
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/*++
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Routine Description:
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Write a string on the client area in the current position and
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adjust the current position. The string is written in the current
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attribute.
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Arguments:
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String - null terminated string to write.
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Return Value:
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None.
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--*/
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{
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PCHAR p;
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for(p=String; *p; p++) {
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DnWriteChar(*p);
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if(*p != '\n') {
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ScreenX++;
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}
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}
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}
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VOID
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DnWriteStatusText(
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IN PCHAR FormatString OPTIONAL,
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...
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)
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/*++
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Routine Description:
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Update the status area
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Arguments:
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FormatString - if present, supplies a printf format string for the
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rest of the arguments. Otherwise the status area is cleared out.
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Return Value:
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None.
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--*/
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{
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va_list arglist;
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int StringLength;
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static CHAR String[SCREEN_WIDTH+1];
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UCHAR SavedAttribute;
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//
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// First, clear out the status area.
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//
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DnpBlankScreenArea( STATUS_ATTRIBUTE,
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0,
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SCREEN_WIDTH-1,
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SCREEN_HEIGHT-STATUS_HEIGHT,
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SCREEN_HEIGHT-1
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);
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if(FormatString) {
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va_start(arglist,FormatString);
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StringLength = vsnprintf(String,SCREEN_WIDTH+1,FormatString,arglist);
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String[SCREEN_WIDTH] = '\0';
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SavedAttribute = CurrentAttribute;
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CurrentAttribute = STATUS_ATTRIBUTE;
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DnPositionCursor(STATUS_LEFT_MARGIN,SCREEN_HEIGHT - STATUS_HEIGHT);
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DnWriteString(String);
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CurrentAttribute = SavedAttribute;
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}
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}
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VOID
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DnSetCopyStatusText(
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IN PCHAR Caption,
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IN PCHAR Filename
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)
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/*++
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Routine Description:
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Write or erase a copying message in the lower right part of the screen.
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Arguments:
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Filename - name of file currently being copied. If NULL, erases the
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copy status area.
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Return Value:
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None.
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--*/
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{
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unsigned CopyStatusAreaLen;
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CHAR StatusText[100];
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//
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// The 13 is for 8.3 and a space
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//
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CopyStatusAreaLen = strlen(Caption) + 13;
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//
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// First erase the status area.
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//
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DnpBlankScreenArea( STATUS_ATTRIBUTE,
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(UCHAR)(SCREEN_WIDTH - CopyStatusAreaLen),
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SCREEN_WIDTH - 1,
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SCREEN_HEIGHT - STATUS_HEIGHT,
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SCREEN_HEIGHT - 1
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);
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if(Filename) {
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UCHAR SavedAttribute;
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UCHAR SavedX,SavedY;
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SavedAttribute = CurrentAttribute;
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SavedX = ScreenX;
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SavedY = ScreenY;
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CurrentAttribute = STATUS_ATTRIBUTE;
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DnPositionCursor((UCHAR)(SCREEN_WIDTH-CopyStatusAreaLen),SCREEN_HEIGHT-1);
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memset(StatusText,0,sizeof(StatusText));
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strcpy(StatusText,Caption);
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strncpy(StatusText + strlen(StatusText),Filename,12);
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DnWriteString(StatusText);
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CurrentAttribute = SavedAttribute;
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ScreenX = SavedX;
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ScreenY = SavedY;
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}
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}
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VOID
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DnStartEditField(
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IN BOOLEAN CreateField,
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IN UCHAR X,
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IN UCHAR Y,
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IN UCHAR W
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)
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/*++
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Routine Description:
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Sets up the display package to start handling an edit field.
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Arguments:
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CreateField - if TRUE, caller is starting an edit field interaction.
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If FALSE, he is ending one.
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X,Y,W - supply coords and width in chars of the edit field.
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Return Value:
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None.
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--*/
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{
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static UCHAR SavedAttribute = 255;
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CursorOn = CreateField;
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if(CreateField) {
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if(SavedAttribute == 255) {
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SavedAttribute = CurrentAttribute;
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CurrentAttribute = EDIT_ATTRIBUTE;
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}
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DnpBlankScreenArea(EDIT_ATTRIBUTE,X,(UCHAR)(X+W-1),Y,Y);
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} else {
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if(SavedAttribute != 255) {
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CurrentAttribute = SavedAttribute;
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SavedAttribute = 255;
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}
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}
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}
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|
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VOID
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DnExitDialog(
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VOID
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)
|
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{
|
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unsigned W,H,X,Y,i;
|
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PUCHAR CharSave;
|
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PUCHAR AttSave;
|
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ULONG Key,ValidKeys[3] = { ASCI_CR,DN_KEY_F3,0 };
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UCHAR SavedX,SavedY,SavedAttribute;
|
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#ifndef USE_INT10
|
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BOOLEAN SavedCursorState = CursorOn;
|
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#endif
|
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|
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SavedAttribute = CurrentAttribute;
|
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CurrentAttribute = EXITDLG_ATTRIBUTE;
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SavedX = ScreenX;
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SavedY = ScreenY;
|
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|
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#ifndef USE_INT10
|
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//
|
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// Shut the cursor off.
|
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//
|
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CursorIsActuallyOn = FALSE;
|
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CursorOn = FALSE;
|
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_asm {
|
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mov ah,2 // function -- position cursor
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mov bh,0 // display page
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mov dh,SCREEN_HEIGHT
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mov dl,0
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int 10h
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}
|
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#endif
|
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|
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//
|
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// Count lines in the dialog and determine its width.
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//
|
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for(H=0; DnsExitDialog.Strings[H]; H++);
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W = strlen(DnsExitDialog.Strings[0]);
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|
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//
|
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// allocate two buffers for character save and attribute save
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//
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CharSave = MALLOC(W*H,TRUE);
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AttSave = MALLOC(W*H,TRUE);
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|
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//
|
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// save the screen patch
|
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//
|
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for(Y=0; Y<H; Y++) {
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for(X=0; X<W; X++) {
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|
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UCHAR att,chr;
|
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UCHAR x,y;
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x = (UCHAR)(X + DnsExitDialog.X);
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y = (UCHAR)(Y + DnsExitDialog.Y);
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|
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#ifdef USE_INT10
|
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_asm {
|
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|
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// first position cursor
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mov ah,2
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mov bh,0
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mov dh,y
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mov dl,x
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int 10h
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|
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// now read the char/att at the cursor
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mov ah,8
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mov bh,0
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int 10h
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mov att,ah
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mov chr,al
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}
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#else
|
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chr = SCREEN_BUFFER_CHR(x,y);
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att = SCREEN_BUFFER_ATT(x,y);
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#endif
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|
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CharSave[Y*W+X] = chr;
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AttSave[Y*W+X] = att;
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}
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}
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|
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//
|
|
// Put up the dialog
|
|
//
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|
|
for(i=0; i<H; i++) {
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|
DnPositionCursor(DnsExitDialog.X,(UCHAR)(DnsExitDialog.Y+i));
|
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DnWriteString(DnsExitDialog.Strings[i]);
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|
}
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|
|
CurrentAttribute = SavedAttribute;
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|
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//
|
|
// Wait for a valid keypress
|
|
//
|
|
|
|
Key = DnGetValidKey(ValidKeys);
|
|
if(Key == DN_KEY_F3) {
|
|
DnExit(1);
|
|
}
|
|
|
|
//
|
|
// Restore the patch
|
|
//
|
|
for(Y=0; Y<H; Y++) {
|
|
for(X=0; X<W; X++) {
|
|
|
|
UCHAR att,chr;
|
|
UCHAR x,y;
|
|
|
|
x = (UCHAR)(X + DnsExitDialog.X);
|
|
y = (UCHAR)(Y + DnsExitDialog.Y);
|
|
|
|
chr = CharSave[Y*W+X];
|
|
att = AttSave[Y*W+X];
|
|
|
|
#ifdef USE_INT10
|
|
_asm {
|
|
|
|
// first position cursor
|
|
mov ah,2
|
|
mov bh,0
|
|
mov dh,y
|
|
mov dl,x
|
|
int 10h
|
|
|
|
// now write the char/att at the cursor
|
|
mov ah,9
|
|
mov al,chr
|
|
mov bh,0
|
|
mov bl,att
|
|
mov cx,1
|
|
int 10h
|
|
}
|
|
#else
|
|
SCREEN_BUFFER_CHR(x,y) = chr;
|
|
SCREEN_BUFFER_ATT(x,y) = att;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
FREE(CharSave);
|
|
FREE(AttSave);
|
|
|
|
#ifndef USE_INT10
|
|
CursorOn = SavedCursorState;
|
|
#endif
|
|
|
|
if(CursorOn) {
|
|
DnPositionCursor(SavedX,SavedY);
|
|
} else {
|
|
ScreenX = SavedX;
|
|
ScreenY = SavedY;
|
|
_asm {
|
|
mov ah,2
|
|
mov bh,0
|
|
mov dh,SCREEN_HEIGHT;
|
|
mov dl,0
|
|
int 10h
|
|
}
|
|
#ifndef USE_INT10
|
|
CursorIsActuallyOn = FALSE;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
|
|
|
|
//
|
|
// Internal support routines
|
|
//
|
|
VOID
|
|
DnpBlankScreenArea(
|
|
IN UCHAR Attribute,
|
|
IN UCHAR Left,
|
|
IN UCHAR Right,
|
|
IN UCHAR Top,
|
|
IN UCHAR Bottom
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Invoke the BIOS to blank a region of the screen.
|
|
|
|
Arguments:
|
|
|
|
Attribute - screen attribute to use to blank the region
|
|
|
|
Left,Right,Top,Bottom - coords of region to blank
|
|
|
|
Return Value:
|
|
|
|
None.
|
|
|
|
--*/
|
|
|
|
{
|
|
#ifdef USE_INT10
|
|
//
|
|
// Invoke the BIOS
|
|
//
|
|
|
|
_asm {
|
|
mov ah,6 // function number -- scroll window up
|
|
xor al,al // function code -- blank window
|
|
mov bh,Attribute
|
|
mov ch,Top
|
|
mov cl,Left
|
|
mov dh,Bottom
|
|
mov dl,Right
|
|
int 10h
|
|
}
|
|
#else
|
|
UCHAR x,y;
|
|
|
|
for(y=Top; y<=Bottom; y++) {
|
|
for(x=Left; x<=Right; x++) {
|
|
SCREEN_BUFFER_CHR(x,y) = ' ';
|
|
SCREEN_BUFFER_ATT(x,y) = Attribute;
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
|
|
int
|
|
DnGetGaugeChar(
|
|
VOID
|
|
)
|
|
{
|
|
return(0xdb); //inverse square in cp437, 850, etc.
|
|
}
|