bool CreateFrameRateWnd(FrameRateWnd *w)
{
// WS_POPUP removes all decorations
DWORD dwStyle = WS_POPUP | WS_VISIBLE | WS_DISABLED;
RECT r = GetClientRect(w->hwndAssociatedWith);
// since this is WS_POPUP window, providing w->hwndAssocatedWith doesn't establish
// parent-child relationship but ownership relationship (as long as hwndAssociatedWith
// is WS_OVERLAPEPED or WS_POPUP). Owned window always shows up on top of owner in z-order
// http://msdn.microsoft.com/en-us/library/ms632599%28v=VS.85%29.aspx#owned_windows
HWND hwnd = CreateWindowEx(WS_EX_LAYERED, FRAME_RATE_CLASS_NAME, NULL, dwStyle,
0, 0, 0, 0, w->hwndAssociatedWith, NULL, GetModuleHandle(NULL), w);
CrashIf(hwnd != w->hwnd);
if (!hwnd) {
return false;
}
w->font = GetDefaultGuiFont();
SetWindowSubclass(w->hwndAssociatedWith, WndProcFrameRateAssociated, 0, (DWORD_PTR) w);
SetLayeredWindowAttributes(hwnd, 0, 0x7f, LWA_ALPHA);
ShowFrameRate(w, 0);
return true;
}
void ShowFrameRateDur(FrameRateWnd *w, double durMs)
{
ShowFrameRate(w, FrameRateFromDuration(durMs));
}
void CCapVideoDlg::OnTimer(UINT nIDEvent){
if(nIDEvent==1){
ShowFrameRate();
}
}
