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293 lines
8.6 KiB
293 lines
8.6 KiB
/***********************************************************************
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TWAIN source code:
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Copyright (C) '92-'93 Wang Laboratories, Inc.:
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All rights reserved.
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Author: Ken Spina
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Project: TWAIN Scanner Support in O/i Client
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Module: ENABLE.C - Contains IMGTwainEnableDS() & IMGTwainDisableDS()
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Comments: DLL to support Wang Open/image Products
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History of Revisions:
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$Log: S:\products\msprods\oiwh\oitwain\enable.c_v $
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*
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* Rev 1.2 25 Apr 1996 15:56:32 BG
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* This closes bug #6356. Before the first scan, I must now check
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* the AppID.ApplicationName field to be null. If it is, that means
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* that I could not get the app title at ScannerOpen time because
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* the window I get from the Scan OCX is an IEDIT control window and
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* it is not fully initialized with the application. I must now
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*
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* get the application title using the same window (fully initialized
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* at this point) and copy it to the AppID.ApplicationName field of
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* a TWAIN structure passed to the data source at scan time. Some
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* data sources use this title in a progress box. Microsoft probed a bug
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* where this title is null on the first scan but not on subsequent appends
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* or inserts.
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*
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* Rev 1.2 25 Apr 1996 15:31:30 BG
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* This closes bug #6356. Before the first scan, I must now check
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* the AppID.ApplicationName field to be null. If it is, that means
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* that I could not get the app title at ScannerOpen time because
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* the window I get from the Scan OCX is an IEDIT control window and
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* it is not fully initialized with the application. I must now
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* get the application title using the same window (fully initialized
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* at this point) and copy it to the AppID.ApplicationName field of
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* a TWAIN structure passed to the data source at scan time. Some
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* data sources use this title in a progress box. Microsoft probed a bug
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* where this title is null on the first scan but not on subsequent appends
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* or inserts.
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*
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* Rev 1.1 20 Jul 1995 12:16:58 KFS
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* changed oitwain.h to engoitwa.h and display.h to engdisp.h
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*
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* Rev 1.0 20 Jul 1995 10:31:04 KFS
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* Initial entry
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*
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* Rev 1.1 23 Aug 1994 15:58:20 KFS
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* No code change, add vlog comments to file on checkin
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*
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REV# INITIALS DATE CHANGES
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1 kfs 03/10/93 Created for OITWAIN.DLL functions
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*************************************************************************/
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#include "nowin.h" // eliminate not used Window definitions
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#include <windows.h> // Note: dc.h also REQUIRES windows defs
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#include "TWAIN.h" // for TW data type defines
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//#include "oitwain.h" // public function prototypes & definitions
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#include "engoitwa.h" // Prototypes & definitions used by other DLL's
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// Previously called oitwain.h
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#include "internal.h" // non-public function prototypes & definitions
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#include "engdisp.h" // the private prop stuff -- jar
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/* imported variables from other modules */
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extern char szOiTwainProp[]; // "O/i TWAIN Support";
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extern DSMENTRYPROC lpDSM_Entry; // entry point to the SM
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/* exported variables to other modules (extern in other modules) */
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// Globals within module
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/***********************************************************************
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* FUNCTION: IMGTwainEnableDS
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*
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* ARGS: pTW_IDENTITY lpPrivDSID, pointer to DS structure, input
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BOOL bUIOn, show UI = TRUE, input
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*
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* RETURNS: TW_UINT16 return for 0=success(enabled); any other=not open/fail
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*
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* NOTES: 1). only enable an open Source
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* 2). call the Source Manager to:
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* - bring up the Source's User Interface
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*/
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WORD PASCAL IMGTwainEnableDS (HWND hWnd, pTW_USERINTERFACE pdcUI,
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pSTR_DCERROR pError)
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{
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TW_UINT16 dcRC=TWRC_SUCCESS;
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TW_UINT16 dcCC=TWCC_SUCCESS;
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HANDLE hOiSupport;
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pTWAIN_SUPPORT pOiSupport = 0L;
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if (!pdcUI) // check for invalid pointer
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{
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dcRC = TWRC_NULLPTR;
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}
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if (!IsWindow(hWnd))
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{
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dcRC = TWRC_BAD_WND;
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}
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if (!(hOiSupport = IMGGetProp(hWnd, szOiTwainProp)))
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{
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dcRC = TWRC_NULLPTR;
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}
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if (!(pOiSupport = (pTWAIN_SUPPORT)GlobalLock(hOiSupport)))
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{
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dcRC = TWRC_MEMLOCK;
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}
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if (dcRC){
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if (pError){
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pError->dcRC = dcRC;
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pError->dcCC = dcCC;
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}
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return dcRC;
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}
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// BG 4/25/96 If the App ID string is null, try to get
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// it again from the app window. This would happen on the
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// first scan from our app viewer because the IEDIT window
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// has not been established yet, therefore we could not
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// get to the app window title bar from the IEDIT window
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// handle given to us by the Scan OCX in IMGTwainOpenScanner()
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// of DC_SCAN.C in OISLB400.DLL.
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if (pOiSupport->AppID.ProductName[0] == 0)
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{
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LPSTR lpDash;
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char szBuffer[281]; // stolen from DC_SCAN.C MAX_RESOURCE_CHAR
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HWND hAppWnd; // Need to search for window with Title, usually app wndw
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// Get it from application window
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if (!(hAppWnd = GetParent(hWnd))) hAppWnd = hWnd;
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while (hAppWnd && !GetWindowText(hAppWnd, szBuffer, 281))
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{ // No title, search other windows
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hAppWnd = GetParent(hAppWnd);
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}
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lpDash = lstrchr(szBuffer, '-');
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if (lpDash)
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{
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if (*(lpDash - 1) == 0x20)
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{
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// *(lpDash - 1) = 0; // Changed for Win95
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lstrcpy((pOiSupport->AppID).ProductName, (lpDash + 1));
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}
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}
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else
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{ // no dash use all of it, no longer than TW_STR32
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if ((UINT)lstrlen(szBuffer) > 33 /*sizeof(TW_STR32)*/)
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szBuffer[33] = 0;
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lstrcpy((pOiSupport->AppID).ProductName, szBuffer);
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}
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}
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// only enable open Source's
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if (pOiSupport->DCDSOpen==TRUE)
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{
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HWND hLocParent; // use to save handle trashed with thunk
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// This will display the Source User Interface. The Source should only display
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// a user interface that is compatible with the group defined
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// by appID.SupportedGroups (in our case DG_IMAGE | DG_CONTROL)
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(pOiSupport->dcUI).ShowUI = pdcUI->ShowUI; // Set whether we show UI or not
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hLocParent = (pOiSupport->dcUI).hParent; // save it because it's trashed
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dcRC = (*lpDSM_Entry)(&pOiSupport->AppID,
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&pOiSupport->DsID,
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DG_CONTROL,
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DAT_USERINTERFACE,
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MSG_ENABLEDS,
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(TW_MEMREF)&pOiSupport->dcUI);
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(pOiSupport->dcUI).hParent = hLocParent; // restore it
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if (dcRC)
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{
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dcCC = DCGetConditionCode(pOiSupport);
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}
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else
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{ // Successful enable
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pdcUI->ModalUI = (pOiSupport->dcUI).ModalUI; // send back ModalUI to appl
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pOiSupport->DCDSEnabled = TRUE;
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}
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}
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else{
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dcRC = TWRC_FAILURE;
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dcCC = TWCC_DS_NOT_OPEN;
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}
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if (pError){
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pError->dcRC = dcRC;
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pError->dcCC = dcCC;
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}
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if (pOiSupport)
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{
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GlobalUnlock(hOiSupport);
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}
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return dcRC;
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} // IMGTwainEnableDS
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/***********************************************************************
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* FUNCTION: IMGTwainDisableDS
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*
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* ARGS: none
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*
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* RETURNS: none
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*
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* NOTES: 1). only disable an open Source
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* 2). call Source Manager to:
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* - ask Source to hide it's User Interface
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*/
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WORD PASCAL IMGTwainDisableDS (HWND hWnd, pSTR_DCERROR pError)
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{
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TW_UINT16 dcRC=TWRC_SUCCESS;
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TW_UINT16 dcCC=TWCC_SUCCESS;
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HANDLE hOiSupport;
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pTWAIN_SUPPORT pOiSupport = 0L;
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if (!IsWindow(hWnd))
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{
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dcRC = TWRC_BAD_WND;
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}
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if (!(hOiSupport = IMGGetProp(hWnd, szOiTwainProp)))
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{
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dcRC = TWRC_NULLPTR;
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}
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if (!(pOiSupport = (pTWAIN_SUPPORT)GlobalLock(hOiSupport)))
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{
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dcRC = TWRC_MEMLOCK;
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}
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if (dcRC){
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if (pError){
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pError->dcRC = dcRC;
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pError->dcCC = dcCC;
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}
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return dcRC;
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}
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// only disable open Source's
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if (pOiSupport->DCDSOpen == TRUE)
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{
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HWND hLocParent; // use to save handle trashed with thunk
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// Hide the Source UI
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(pOiSupport->dcUI).ShowUI = FALSE;
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hLocParent = (pOiSupport->dcUI).hParent; // save it because it's trashed
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dcRC = (*lpDSM_Entry)(&pOiSupport->AppID,
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&pOiSupport->DsID,
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DG_CONTROL,
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DAT_USERINTERFACE,
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MSG_DISABLEDS,
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(TW_MEMREF)&pOiSupport->dcUI);
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(pOiSupport->dcUI).hParent = hLocParent; // restore it
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if (dcRC)
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{
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dcCC = DCGetConditionCode(pOiSupport);
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}
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else // Successful disable
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pOiSupport->DCDSEnabled = FALSE;
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}
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else{
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dcRC = TWRC_FAILURE;
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dcCC = TWCC_DS_NOT_OPEN;
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}
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if (pError){
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pError->dcRC = dcRC;
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pError->dcCC = dcCC;
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}
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if (pOiSupport)
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{
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GlobalUnlock(hOiSupport);
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}
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return dcRC;
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} // IMGTwainDisableDS
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