private Image CaptureWindow(IntPtr handle, int x, int y, int width, int height)
{
Image img = null;
IntPtr srcDC = IntPtr.Zero;
IntPtr memoryDC = IntPtr.Zero;
IntPtr bitmap = IntPtr.Zero;
try
{
// 해당 Handle의 크기 취득
if (width == 0 || height == 0)
{
var windowRect = new WindowNative.Rect();
var clientRect = new WindowNative.Rect();
WindowNative.GetWindowRect(handle, ref windowRect);
WindowNative.GetClientRect(handle, ref clientRect);
if (x == 0)
{
x = windowRect.Left;
}
if (y == 0)
{
y = windowRect.Top;
}
if (width == 0)
{
width = clientRect.Width;
}
if (height == 0)
{
height = windowRect.Height;
}
// Border 사이즈 제외
int diff = windowRect.Width - clientRect.Width;
if (diff > 0)
{
int borderSize = diff / 2;
x += borderSize;
y += borderSize;
height -= borderSize * 2;
}
}
// 해상도 스케일에 의한 크기 변경
float scale = CalcScale();
if (scale > 1)
{
width = (int)(width * scale);
height = (int)(height * scale);
}
handle = WindowNative.GetDesktopWindow();
srcDC = WindowNative.GetWindowDC(handle);
memoryDC = WindowNative.CreateCompatibleDC(srcDC);
bitmap = WindowNative.CreateCompatibleBitmap(srcDC, width, height);
IntPtr oldBitmap = WindowNative.SelectObject(memoryDC, bitmap);
WindowNative.BitBlt(memoryDC, 0, 0, width, height, srcDC, x, y, WindowNative.SRCCOPY | WindowNative.CAPTUREBLT);
WindowNative.SelectObject(memoryDC, oldBitmap);
img = Image.FromHbitmap(bitmap);
}
catch (Exception e)
{
Logger.Error(e);
}
finally
{
WindowNative.DeleteObject(bitmap);
WindowNative.DeleteDC(memoryDC);
WindowNative.ReleaseDC(handle, srcDC);
}
return(img);
}