static Bitmap CaptureFromScreen(IntPtr hwnd, WindowInfo wi)
{
using (var guard = new ForegroundWindowGuard()) {
if (guard.ForegroundWindow != hwnd)
Utils.ForceForegroundWindow(hwnd);
Bitmap windowBitmap = new Bitmap(
wi.rcWindow.right - wi.rcWindow.left,
wi.rcWindow.bottom - wi.rcWindow.top,
System.Drawing.Imaging.PixelFormat.Format32bppRgb
);
Graphics graphicsWindow = Graphics.FromImage(windowBitmap);
graphicsWindow.CopyFromScreen(
new Point(wi.rcWindow.left, wi.rcWindow.top),
Point.Empty,
windowBitmap.Size,
CopyPixelOperation.SourceCopy
);
return windowBitmap;
}
}
static extern IntPtr GetWindowInfo(IntPtr hWnd, out WindowInfo pwi);
public WindowBorderOnScreenFlags(WindowInfo wi, Screen s)
{
leftBorderOnScreen = (wi.rcWindow.left >= s.WorkingArea.Left) && (wi.rcWindow.left < s.WorkingArea.Right);
rightBorderOnScreen = (wi.rcWindow.right > s.WorkingArea.Left) && (wi.rcWindow.right <= s.WorkingArea.Right);
topBorderOnScreen = (wi.rcWindow.top >= s.WorkingArea.Top) && (wi.rcWindow.top < s.WorkingArea.Bottom);
bottomBorderOnScreen = (wi.rcWindow.bottom > s.WorkingArea.Top) && (wi.rcWindow.bottom <= s.WorkingArea.Bottom);
}
static Bitmap PrintWindow(IntPtr hwnd, WindowInfo wi, string processName)
{
Bitmap windowBitmap = new Bitmap(
wi.rcWindow.right - wi.rcWindow.left,
wi.rcWindow.bottom - wi.rcWindow.top,
System.Drawing.Imaging.PixelFormat.Format32bppRgb
);
Graphics graphicsWindow = Graphics.FromImage(windowBitmap);
IntPtr hdc = graphicsWindow.GetHdc();
PrintWindow(hwnd, hdc, 0);
if (processName == "iexplore") // HACK: for IE
PrintWindow(hwnd, hdc, 0);
graphicsWindow.ReleaseHdc(hdc);
graphicsWindow.Flush();
return windowBitmap;
}
static int GetWindowVisibleArea(WindowInfo wi, Screen s)
{
WindowBorderOnScreenFlags flags = new WindowBorderOnScreenFlags(wi, s);
int visibleWidth = 0;
int visibleHeight = 0;
if (flags.leftBorderOnScreen)
visibleWidth = flags.rightBorderOnScreen ? wi.rcWindow.right - wi.rcWindow.left : s.WorkingArea.Right - wi.rcWindow.left;
else if (flags.rightBorderOnScreen)
visibleWidth = wi.rcWindow.right - s.WorkingArea.Left;
if (flags.topBorderOnScreen)
visibleHeight = flags.bottomBorderOnScreen ? wi.rcWindow.bottom - wi.rcWindow.top : s.WorkingArea.Bottom - wi.rcWindow.top;
else if (flags.bottomBorderOnScreen)
visibleHeight = wi.rcWindow.bottom - s.WorkingArea.Top;
return visibleWidth * visibleHeight;
}
static Rectangle GetVisibleRectangle(WindowInfo wi, Screen s)
{
Rectangle resultWindowRect = new Rectangle(
wi.rcWindow.left,
wi.rcWindow.top,
wi.rcWindow.right - wi.rcWindow.left,
wi.rcWindow.bottom - wi.rcWindow.top
);
WindowBorderOnScreenFlags flags = new WindowBorderOnScreenFlags(wi, s);
if (!flags.leftBorderOnScreen)
resultWindowRect.X = s.WorkingArea.X;
else {
resultWindowRect.X = !flags.rightBorderOnScreen ?
s.WorkingArea.Right - wi.rcWindow.right + wi.rcWindow.left :
wi.rcWindow.left;
}
if (!flags.topBorderOnScreen)
resultWindowRect.Y = s.WorkingArea.Y;
else {
resultWindowRect.Y = !flags.bottomBorderOnScreen ?
s.WorkingArea.Bottom - wi.rcWindow.bottom + wi.rcWindow.top :
wi.rcWindow.top;
}
return resultWindowRect;
}