How to get name of Window?

[h4ever]

Hi guys. I have such decent problem. In my code I would like to capture screen in Firefox Browser Window using OpenCV. The problem is that the result of FindWindow is nullptr so the app crashes. I don't see the title of the Window. Task manager shows: "My chat with Bill Warner ... and so on" (it is long). How Can I found Window if I know it start "My chat"... without the need to specify complete string of the Window title?

#include "screen_capture.h"
#include "main_screen_capture.h"

int main(int argc, char ** argv){
	HWND hWnd = FindWindow(NULL, _T("My chat") ); // get window handle
	if (!hWnd)
		return -1;
	WindowCapture cap(hWnd);
	cv::Mat dst;
	cap.captureFrame(dst);
	cv::imshow("cap", dst);
	cv::waitKey();
	return 0;
}
}

I am Using Visual Studio 2010 on Windows XP

[48bpfSEw]

maybe you'll find the answer in the source code of winspy

http://www.catch22.net/software/winspy-17

or in the source of "wincap" on the "source" page

[Thomas1965]

You can try the EnumWindows function. It gives you the handle to the window. With this handle you can get the Window text.

https://msdn.microsoft.com/en-us/library/windows/desktop/ms633497(v=vs.85).aspx