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LScreenCapture::CaptureWindow

Summary

Captures an image of the specified window or the specified window's client area into the associated class object's bitmap.

Syntax

#include "ltwrappr.h"

virtual L_INT LScreenCapture::CaptureWindow(hWnd, wctCaptureType)

Parameters

HWND hWnd

The handle of the window to capture.

WINDOWCAPTURETYPE wctCaptureType

The capture type. Possible values are:

Value	Meaning
CAPTURE_CLIENT_AREA	[0x01] Captures the client area of the window.
CAPTURE_WINDOW	[0x02] Capture the complete window.

Returns

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

Comments

The hot key needs to be pressed to complete the capture.

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__CaptureWindowExample(HWND hWnd) 
 
{ 
   L_INT nRet; 
   HDC hDC; 
   RECT rcClientRect; 
   LBitmap LeadBitmap; 
   LScreenCapture screenCapture(&LeadBitmap); 
 
   // capture Window 
   nRet = screenCapture.CaptureWindow(hWnd, CAPTURE_WINDOW); 
 
   if(nRet == SUCCESS) 
 
   { 
 
      hDC = GetDC(hWnd); 
 
      GetClientRect(hWnd, &rcClientRect); 
 
      LeadBitmap.Paint()->SetDC(hDC); 
 
      nRet = LeadBitmap.SetDstRect(&rcClientRect); 
      if(nRet != SUCCESS) 
         return nRet; 
 
      nRet = LeadBitmap.Paint()->PaintDC(); 
      if(nRet != SUCCESS) 
         return nRet; 
 
      ReleaseDC(hWnd, hDC); 
 
   } 
   else 
      return nRet; 
 
   return SUCCESS; 
 
}