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/*++
Copyright (c) 1994-1998, Microsoft Corporation All rights reserved.
Module Name:
mousewhl.c
Abstract:
This module contains the routines for the Mouse Wheel Property Sheet page.
Revision History:
--*/
//
// Include Files.
//
#include "main.h"
#include "util.h"
#include "rc.h"
#include "mousehlp.h"
#ifndef ARRAYSIZE
#define ARRAYSIZE(x) (sizeof(x)/sizeof((x)[0]))
#endif
//
// Constant Declarations.
//
#define SCROLL_DEFAULT 3
#define MIN_SCROLL_LINES 1
#define MAX_SCROLL_LINES 100
#define MAX_CHARS_FOR_SCROLL_LINES 3
#ifndef UINT_MAX
#define UINT_MAX ((UINT)-1)
#endif
//
// Typedef Declarations.
//
//
// Dialog Data.
//
typedef struct tag_MouseGenStr{
UINT nOrigScrollLines; //If this is WHEEL_PAGESCROLL, then we scroll one Page at a time.
HWND hDlg;
} MOUSEWHLSTR, *PMOUSEWHLSTR, *LPMOUSEWHLSTR;
//
// Context Help Ids.
//
const DWORD aMouseWheelHelpIds[] ={ IDC_GROUPBOX_1, IDH_COMM_GROUPBOX, IDRAD_SCROLL_LINES, IDH_MOUSE_WHEEL_SCROLLING, IDRAD_SCROLL_PAGE, IDH_MOUSE_WHEEL_SCROLLING, IDC_SPIN_SCROLL_LINES, IDH_MOUSE_WHEEL_SCROLLING, IDT_SCROLL_FEATURE_TXT, IDH_MOUSE_WHEEL_SCROLLING, IDE_BUDDY_SCROLL_LINES, IDH_MOUSE_WHEEL_SCROLLING, 0,0};
////////////////////////////////////////////////////////////////////////////
//
// EnableMouseWheelDlgControls
//
////////////////////////////////////////////////////////////////////////////
void EnableMouseWheelDlgControls(HWND hDlg, BOOL bEnable){ static const UINT rgidCtl[] = { IDE_BUDDY_SCROLL_LINES, IDC_SPIN_SCROLL_LINES, }; int i; for (i = 0; i < ARRAYSIZE(rgidCtl); i++) { HWND hwnd = GetDlgItem(hDlg, rgidCtl[i]); if (NULL != hwnd) { EnableWindow(hwnd, bEnable); } }}
////////////////////////////////////////////////////////////////////////////
//
// SetScrollWheelLines
//
////////////////////////////////////////////////////////////////////////////
void SetScrollWheelLines(HWND hDlg, BOOL bSaveSettings){ UINT uNumLines = SCROLL_DEFAULT; UINT uiSaveFlag = (bSaveSettings) ? SPIF_UPDATEINIFILE | SPIF_SENDWININICHANGE : FALSE;
if (IsDlgButtonChecked(hDlg, IDRAD_SCROLL_LINES)) { //Scrolling n Lines at a time
BOOL fTranslated = FALSE; // numeric conversion successful
// Retrieve number of scroll-lines from edit control.
uNumLines = GetDlgItemInt(hDlg, IDE_BUDDY_SCROLL_LINES, &fTranslated, FALSE); if (!fTranslated) { uNumLines = SCROLL_DEFAULT; } } else { //Scrolling a page at a time
uNumLines = WHEEL_PAGESCROLL; }
SystemParametersInfo( SPI_SETWHEELSCROLLLINES, uNumLines, NULL, uiSaveFlag);}
////////////////////////////////////////////////////////////////////////////
//
// DestroyMouseWheelDlg
//
////////////////////////////////////////////////////////////////////////////
void DestroyMouseWheelDlg( PMOUSEWHLSTR pMstr){ HWND hDlg = NULL; if( pMstr ) { hDlg = pMstr->hDlg;
LocalFree( (HGLOBAL)pMstr );
SetWindowLongPtr( hDlg, DWLP_USER, 0 ); }}
////////////////////////////////////////////////////////////////////////////
//
// InitMouseWheelDlg
//
////////////////////////////////////////////////////////////////////////////
void InitMouseWheelDlg( HWND hDlg){ PMOUSEWHLSTR pMstr = NULL; HWND hWndBuddy = NULL; UINT nScrollLines = SCROLL_DEFAULT;
pMstr = (PMOUSEWHLSTR)LocalAlloc(LPTR, sizeof(MOUSEWHLSTR));
if (pMstr == NULL) { return; }
SetWindowLongPtr(hDlg, DWLP_USER, (LONG_PTR)pMstr);
pMstr->hDlg = hDlg;
//////////////////////
SystemParametersInfo(SPI_GETWHEELSCROLLLINES, 0, &nScrollLines, 0); if (nScrollLines < MIN_SCROLL_LINES) { nScrollLines = SCROLL_DEFAULT; } pMstr->nOrigScrollLines = nScrollLines;
//Set the buddy window
hWndBuddy = GetDlgItem (hDlg, IDE_BUDDY_SCROLL_LINES); SendDlgItemMessage (hDlg, IDC_SPIN_SCROLL_LINES, UDM_SETBUDDY, (WPARAM)hWndBuddy, 0L);
//Set the range. The maximum range is UINT_MAX for the scroll-lines feature
//but the up-down control can only accept a max value of UD_MAXVAL. Therefore,
//the scroll-lines feature will only have a setting of UINT_MAX when user
//explicitly specifies to scroll one page at a time.
SendDlgItemMessage (hDlg, IDC_SPIN_SCROLL_LINES, UDM_SETRANGE, 0L, MAKELONG(MAX_SCROLL_LINES, MIN_SCROLL_LINES));
//Initialize appropriate scroll-line controls depending on value of
//scroll-lines setting.
if (nScrollLines > MAX_SCROLL_LINES) { EnableMouseWheelDlgControls(hDlg, FALSE); SetDlgItemInt (hDlg, IDE_BUDDY_SCROLL_LINES, SCROLL_DEFAULT, FALSE); CheckRadioButton (hDlg, IDRAD_SCROLL_LINES, IDRAD_SCROLL_PAGE, IDRAD_SCROLL_PAGE); } else { //Display current value in edit control
SetDlgItemInt (hDlg, IDE_BUDDY_SCROLL_LINES, nScrollLines, FALSE); //Check scroll-lines or scroll-page button
CheckRadioButton (hDlg, IDRAD_SCROLL_LINES, IDRAD_SCROLL_PAGE, IDRAD_SCROLL_LINES); }
Edit_LimitText (GetDlgItem (hDlg, IDE_BUDDY_SCROLL_LINES), MAX_CHARS_FOR_SCROLL_LINES);
}
////////////////////////////////////////////////////////////////////////////
//
// MouseWheelDlg
//
////////////////////////////////////////////////////////////////////////////
INT_PTR CALLBACK MouseWheelDlg( HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam){ PMOUSEWHLSTR pMstr = NULL; BOOL bRet = FALSE;
pMstr = (PMOUSEWHLSTR)GetWindowLongPtr(hDlg, DWLP_USER);
switch (message) { case ( WM_INITDIALOG ) : { InitMouseWheelDlg(hDlg); break; } case ( WM_DESTROY ) : { DestroyMouseWheelDlg(pMstr); break; }
case WM_VSCROLL: { SendMessage(GetParent(hDlg), PSM_CHANGED, (WPARAM)hDlg, 0L); break; }
case ( WM_COMMAND ) : { switch (LOWORD(wParam)) { case IDRAD_SCROLL_LINES: case IDRAD_SCROLL_PAGE : { UINT code = HIWORD(wParam);
if (code == BN_CLICKED) { EnableMouseWheelDlgControls(hDlg, IsDlgButtonChecked(hDlg, IDRAD_SCROLL_LINES) ); // Set the property
SetScrollWheelLines(hDlg, FALSE); SendMessage(GetParent(hDlg), PSM_CHANGED, (WPARAM)hDlg, 0L); } break; }
case IDE_BUDDY_SCROLL_LINES: { UINT code = HIWORD(wParam); if (code == EN_UPDATE) { BOOL fTranslated = FALSE; // numeric conversion successful
// Retrieve number of scroll-lines from edit control.
UINT uNumLines = GetDlgItemInt(hDlg, IDE_BUDDY_SCROLL_LINES, &fTranslated, FALSE); if (fTranslated) // valid number converted from text
{ if (uNumLines >= MIN_SCROLL_LINES && uNumLines <= MAX_SCROLL_LINES) { // spin-control range
if (uNumLines != pMstr->nOrigScrollLines) // different value
{ // Set the property
SetScrollWheelLines(hDlg, FALSE); SendMessage(GetParent(hDlg), PSM_CHANGED, (WPARAM)hDlg, 0L); } } else // value out of range
{ fTranslated = FALSE; // discard value
} } if (!fTranslated && // invalid (non-numeric) data
// or out of range numeric value
pMstr) //and the Window has been initialized.
{ SetDlgItemInt (hDlg, IDE_BUDDY_SCROLL_LINES, pMstr->nOrigScrollLines, FALSE); // unsigned
//MessageBeep (0xFFFFFFFF); // chastise user
} } }
}//switch
break; } //WM_COMMAND
case ( WM_NOTIFY ) : { ASSERT (lParam);
switch (((NMHDR *)lParam)->code) { case ( PSN_APPLY ) : { SetScrollWheelLines(hDlg, TRUE); break; } case ( PSN_RESET ) : { //
// Restore the original
//
SystemParametersInfo( SPI_SETWHEELSCROLLLINES, pMstr->nOrigScrollLines, NULL, FALSE); break; } default : { return (FALSE); } } break; }
case ( WM_HELP ) : // F1
{ WinHelp( (HWND)((LPHELPINFO)lParam)->hItemHandle, HELP_FILE, HELP_WM_HELP, (DWORD_PTR)(LPTSTR)aMouseWheelHelpIds ); break; }
case ( WM_CONTEXTMENU ) : // right mouse click
{ WinHelp( (HWND)wParam, HELP_FILE, HELP_CONTEXTMENU, (DWORD_PTR)(LPTSTR)aMouseWheelHelpIds ); break; }
case ( WM_DISPLAYCHANGE ) : case ( WM_WININICHANGE ) : case ( WM_SYSCOLORCHANGE ) : { SHPropagateMessage(hDlg, message, wParam, lParam, TRUE); return TRUE; } default : { return (FALSE); } }
return (TRUE);}
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