比较当前前景窗口句柄

Question

I need to get the current foreground window handle and compare it to a saved previous window handle to see if they match, but I can't use foreground window title, because the title changes often

This is the code I'm using to compare the titles

char cWindow[MAX_PATH];
char nWindow[MAX_PATH];
GetWindowTextA(GetForegroundWindow(), cWindow, sizeof(cWindow));


//Later in code
GetWindowTextA(GetForegroundWindow(), cWindow, sizeof(cWindow));
if (strcmp(nWindow, cWindow) != 0)
{
    fputs("found!",file);
    strcpy(nWindow, cWindow);
}

Answer 1

When you want to check whether the foreground window has changed, you should compare the window handles directly, without their titles.

HWND oldForegroundWindow = GetForegroundWindow();

HWND newForegroundWindow = GetForegrundWindow();
if (newForegroundWindow != oldForegroundWindow) {
  ForegroundWindowHasChanged(oldForegroundWindow, nForegroundWindow);
  oldForegroundWindow = newForeroundWindow;
}

Answer 2

Errr you are NOT setting nWindow to anything both your calls are setting cWindow. Do you think that may be an issue?