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LEADTOOLS Raster imaging C++ Class library help

LScreenCapture::CaptureFromEXE

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#include "ltwrappr.h"

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

L_TCHAR * pszFileName;

/* filename to capture from */

L_INT nResType;

/* resource type to capture */

L_TCHAR * pResID;

/* Resource ID to be captured */

L_BOOL bCaptureByIndex;

/* flag that indicates whether pResID is an index or a resource ID */

COLORREF clrBackGnd;

/* background color to be used for icons */

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

Parameter

Description

pszFileName

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

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

pResID

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

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.

clrBackGnd

Background color for icons.

Returns

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.

See Also

Functions:

Class Members

Topics:

Using Color Values in LEADTOOLS

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;
}
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