private NativeMethods.Rectangle GetTargetProcessWindowData()
{
// What to capture.
if (windowsSourceHandle == IntPtr.Zero)
{
windowsSourceHandle = GetWindowHandle(Settings.ProcessNameScreen);
}
// Get capture area.
NativeMethods.GetWindowRect(windowsSourceHandle, out NativeMethods.Rectangle captureAreaTemp);
// We need to get real area of what we need to capture, excluding window title border etc. So getting the correction.
NativeMethods.ClientToScreen(windowsSourceHandle, out NativeMethods.Point pnt);
// Left and right borders of the window if it has any
var windowMetricsCorrectionX = (pnt.x - captureAreaTemp.left) * 2;
// Caption + bottom border of the window if it has any
var windowMetricsCorrectionY = (pnt.y - captureAreaTemp.top) + (pnt.x - captureAreaTemp.left);
// Calculate the window size taking offsets from 0,0 and also applying correction.
var rect = new NativeMethods.Rectangle
{
left = captureAreaTemp.left + (pnt.x - captureAreaTemp.left),
right = (captureAreaTemp.right - captureAreaTemp.left) - windowMetricsCorrectionX,
top = captureAreaTemp.top + (pnt.y - captureAreaTemp.top),
bottom = (captureAreaTemp.bottom - captureAreaTemp.top) - windowMetricsCorrectionY
};
return(rect);
}
private void KeepWindowInPlace()
{
targetWindowRect = GetTargetProcessWindowData();
if (targetWindowRect.bottom == 0)
{
Location = new Point(0, 0);
Width = 1600;
Height = 900;
}
else
{
Location = new Point(targetWindowRect.left, targetWindowRect.top);
Width = targetWindowRect.right;
Height = targetWindowRect.bottom;
}
}
