static L_BOOL LScreenCapture::IsCaptureActive()
Indicates whether a capture process has been started.
Value | Meaning |
---|---|
TRUE | There is an active capture operation. |
FALSE | There is not an active capture operation. |
You should stop a previously started capture process before starting another, or before the calling thread terminates.
Win32, x64.
/* 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;
}
Help Collections
Raster .NET | C API | C++ Class Library | HTML5 JavaScript
Document .NET | C API | C++ Class Library | HTML5 JavaScript
Medical .NET | C API | C++ Class Library | HTML5 JavaScript
Medical Web Viewer .NET
Multimedia
Direct Show .NET | C API | Filters
Media Foundation .NET | C API | Transforms
Supported Platforms
.NET, Java, Android, and iOS/macOS Assemblies
Imaging, Medical, and Document
C API/C++ Class Libraries
Imaging, Medical, and Document
HTML5 JavaScript Libraries
Imaging, Medical, and Document