Classes and Member Functions > LScreenCapture > LScreenCapture Member Functions > LScreenCapture::IsCaptureActive

LScreenCapture::IsCaptureActive

#include "ltwrappr.h"

static L_BOOL LScreenCapture::IsCaptureActive()

Indicates whether a capture process has been started.

Returns

TRUE	There is an active capture operation.
FALSE	There is not an active capture operation.

Comments

You should stop a previously started capture process before starting another, or before the calling thread terminates.

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

/* This is a Microsoft header file and is required for _beginthread */ 
#include <process.h> 
L_VOID __cdecl CaptureThread( L_VOID *pDummy ); 
LBitmap LeadBitmap; 
LScreenCapture ScreenCapture(&LeadBitmap); 
L_INT LScreenCapture__IsCaptureActiveExample(HWND hWnd) 
{ 
   L_INT nRet; 
   _beginthread(CaptureThread, 0, 0); 
   /// place some delay so that the thread is called 
   Sleep(1000); 
   while(ScreenCapture.IsCaptureActive()) 
   { 
      nRet = ScreenCapture.StopCapture(); 
      if(nRet != SUCCESS) 
         return nRet; 
      MessageBox(hWnd, TEXT("Capture operation aborted by user."), TEXT("Info"), MB_OK); 
   } 
   return SUCCESS; 
} 
L_VOID __cdecl CaptureThread(L_VOID *pDummy) 
{ 
   UNREFERENCED_PARAMETER(pDummy); 
   ScreenCapture.CaptureActiveWindow(); 
   MessageBox(0, TEXT("Capture Thread Terminated."), TEXT("Info"), MB_OK); 
   return; 
}