private static Bitmap GetWindowBitmapBitBltOnDesktop(Rectangle rectangle)
{
Bitmap bitmap;
NativeMethodsEx.RECT rEct = new NativeMethodsEx.RECT()
{
Left = rectangle.Left,
Top = rectangle.Top,
Right = rectangle.Right,
Bottom = rectangle.Bottom
};
NativeMethodsEx.RECT rECT1 = rEct;
if (rECT1.Height == 0 || rECT1.Width == 0)
{
return(null);
}
IntPtr zero = IntPtr.Zero;
IntPtr dC = IntPtr.Zero;
IntPtr intPtr = IntPtr.Zero;
try
{
Bitmap bitmap1 = null;
dC = NativeMethodsEx.User32.GetDC(IntPtr.Zero);
zero = NativeMethodsEx.Gdi32.CreateCompatibleDC(dC);
intPtr = NativeMethodsEx.Gdi32.CreateCompatibleBitmap(dC, rECT1.Width, rECT1.Height);
if (intPtr != IntPtr.Zero)
{
IntPtr intPtr1 = NativeMethodsEx.Gdi32.SelectObject(zero, intPtr);
NativeMethodsEx.Gdi32.BitBlt(zero, 0, 0, rECT1.Width, rECT1.Height, dC, rECT1.Left, rECT1.Top, 80478240);
NativeMethodsEx.Gdi32.SelectObject(zero, intPtr1);
bitmap1 = Image.FromHbitmap(intPtr);
}
bitmap = bitmap1;
}
finally
{
if (dC != IntPtr.Zero)
{
NativeMethodsEx.User32.ReleaseDC(IntPtr.Zero, dC);
}
if (zero != IntPtr.Zero)
{
NativeMethodsEx.Gdi32.DeleteDC(zero);
}
if (intPtr != IntPtr.Zero)
{
NativeMethodsEx.Gdi32.DeleteObject(intPtr);
}
}
return(bitmap);
}
private static Bitmap GetWindowBitmap(Rectangle rectangle, IntPtr handle)
{
NativeMethodsEx.RECT rECT;
Bitmap bitmap;
IntPtr dC = NativeMethodsEx.User32.GetDC(handle);
IntPtr intPtr = handle;
bool flag = false;
//Rectangle rectangle = this.Rectangle;
NativeMethodsEx.RECT rECT1 = new NativeMethodsEx.RECT
{
Left = rectangle.Left,
Top = rectangle.Top,
Right = rectangle.Right,
Bottom = rectangle.Bottom
};
NativeMethodsEx.RECT x = rECT1;
if (x.Height == 0 || x.Width == 0)
{
return(null);
}
if (flag)
{
Point point = new Point(x.Left, x.Top);
Point point1 = new Point(x.Right, x.Bottom);
NativeMethodsEx.User32.ClientToScreen(intPtr, ref point);
NativeMethodsEx.User32.ClientToScreen(intPtr, ref point1);
x.Left = point.X;
x.Top = point.Y;
x.Right = point1.X;
x.Bottom = point1.Y;
}
IntPtr desktopWindow = NativeMethodsEx.User32.GetDesktopWindow();
NativeMethodsEx.RECT rECT2 = new NativeMethodsEx.RECT();
NativeMethodsEx.User32.GetWindowRect(desktopWindow, ref rECT2);
if (!NativeMethodsEx.User32.IntersectRect(out rECT, ref rECT2, ref x))
{
rECT = x;
}
if (NativeMethodsEx.User32.IsRectEmpty(ref rECT))
{
return(null);
}
int width = rECT.Width;
int height = rECT.Height;
IntPtr zero = IntPtr.Zero;
IntPtr windowDC = IntPtr.Zero;
IntPtr zero1 = IntPtr.Zero;
try
{
Bitmap bitmap1 = null;
windowDC = NativeMethodsEx.User32.GetWindowDC(intPtr);
zero = NativeMethodsEx.Gdi32.CreateCompatibleDC(windowDC);
zero1 = NativeMethodsEx.Gdi32.CreateCompatibleBitmap(windowDC, width, height);
if (zero1 != IntPtr.Zero)
{
int num = 0;
int num1 = 0;
IntPtr intPtr1 = NativeMethodsEx.Gdi32.SelectObject(zero, zero1);
NativeMethodsEx.Gdi32.BitBlt(zero, 0, 0, width, height, windowDC, num, num1, 80478240);
NativeMethodsEx.Gdi32.SelectObject(zero, intPtr1);
bitmap1 = Image.FromHbitmap(zero1);
}
bitmap = bitmap1;
}
finally
{
if (windowDC != IntPtr.Zero)
{
NativeMethodsEx.User32.ReleaseDC(intPtr, windowDC);
}
if (zero != IntPtr.Zero)
{
NativeMethodsEx.Gdi32.DeleteDC(zero);
}
if (zero1 != IntPtr.Zero)
{
NativeMethodsEx.Gdi32.DeleteObject(zero1);
}
}
return(bitmap);
}
