public static (Bitmap, CursorPosition?) CaptureScreenshot(Rectangle area, bool captureCursor)
{
var desktopWindowHandle = GetDesktopWindow();
var source = DeviceContext.FromWindow(desktopWindowHandle);
try
{
using var destination = DeviceContext.CreateCompatible(source);
using var bitmap = source.CreateCompatibleBitmap(area.Size);
var oldBitmap = destination.SelectObject(bitmap);
var destinationRectangle = new Rectangle(0, 0, area.Width, area.Height);
destination.BitBlt(destinationRectangle, source, area.Location, CopyPixelOperation.SourceCopy | CopyPixelOperation.CaptureBlt);
var cursorInfo = GetCursorInfo();
// Regardless of whether the cursor is visible, we want to return the position
CursorPosition?cursorPos = null;
if (cursorInfo != null)
{
var info = cursorInfo.Value;
// The coordinates might be negative if the task bar is on the right screen,
// so we need to convert the screen coordinates to image coordinates by subtracting the base offset of the cirtual screen
var(imageX, imageY) = (info.screenPosX - area.X, info.screenPosY - area.Y);
cursorPos = new(
new Point(info.screenPosX, info.screenPosY),
new Point(imageX, imageY)
);
if (captureCursor)
{
DrawCurrentCursorToImageIfVisible(info, cursorPos.OnImage, destination);
}
}
var screenshot = bitmap.ToImage();
destination.SelectObject(oldBitmap);
return(screenshot, cursorPos);
}
finally
{
_ = ReleaseDC(desktopWindowHandle, source.DC);
}
}