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LScreenCapture::CaptureFromEXE

Summary

Captures an image from the specified resource, stored in an EXE or DLL, into the associated class object's bitmap.

Syntax

#include "ltwrappr.h"

virtual L_INT LScreenCapture::CaptureFromEXE(pszFileName, nResType, pResID, bCaptureByIndex, clrBackGnd=RGB(0,0,0))

Parameters

L_TCHAR * pszFileName

Character string containing the name of the exe (or dll) from which the resource should be captured.

L_INT nResType

Specifies the type of resource to capture. Possible values are:

Value	Meaning
RESTYPE_BITMAP	capture a bitmap resource
RESTYPE_ICON	capture an icon resource
RESTYPE_CURSOR	capture a cursor resource

L_TCHAR * pResID

Specifies the index of the resource to capture. You can use MAKEINDEX or MAKERESOURCEID macros to convert the resource ids to strings.

L_BOOL bCaptureByIndex

Flag that indicates whether pResID represents an index or a resource ID. Possible values are:

Value	Meaning
TRUE	pResID is the index position of the requested resource.
FALSE	pResID is the resource ID of the requested resource.

COLORREF clrBackGnd

Background color for icons.

Returns

Value	Meaning
SUCCESS	The function was successful.
< 1	An error occurred. Refer to Return Codes.

Required DLLs and Libraries

LTDIS
LTSCR
For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

Platforms

Win32, x64.

Example

L_INT LScreenCapture__CaptureFromEXEExample(HWND hWnd) 
{ 
   L_INT nRet; 
   HDC hDC; 
   RECT rcDestRect; 
   LBitmap LeadBitmap; 
   LScreenCapture screenCapture(&LeadBitmap); 
 
   // CaptureFromExe  
   //MFCDEM32 is shipped with LEADTOOLS, you have to copy it to the directory of the sample 
   // it has an ICON with ID=128 
   nRet = screenCapture.CaptureFromEXE(TEXT("MFCDEM32.EXE"), RESTYPE_ICON, MAKEINTRESOURCE(128), 0); 
 
   //   COLORREF Transparent; 
   if(nRet == SUCCESS) 
   { 
      hDC = GetDC(hWnd); 
 
      LeadBitmap.Paint()->SetDC(hDC); 
 
      // Set destination rectangle to be the same as the bitmap dimensions 
      SetRect(&rcDestRect, 0, 0, LeadBitmap.GetWidth(), LeadBitmap.GetHeight()); 
 
      nRet = LeadBitmap.SetDstRect(&rcDestRect); 
      if(nRet != SUCCESS) 
         return nRet; 
 
      nRet = LeadBitmap.Paint()->PaintDC(); 
      if(nRet != SUCCESS) 
         return nRet; 
 
      ReleaseDC(hWnd, hDC); 
   } 
   else 
      return nRet; 
 
   return SUCCESS; 
}