private Gdi32.HBITMAP GetCompatibleBitmap(Bitmap bm)
{
using var screenDC = User32.GetDcScope.ScreenDC;
// GDI+ returns a DIBSECTION based HBITMAP. The clipboard deals well
// only with bitmaps created using CreateCompatibleBitmap(). So, we
// convert the DIBSECTION into a compatible bitmap.
Gdi32.HBITMAP hBitmap = bm.GetHBITMAP();
// Create a compatible DC to render the source bitmap.
using var sourceDC = new Gdi32.CreateDcScope(screenDC);
using var sourceBitmapSelection = new Gdi32.SelectObjectScope(sourceDC, hBitmap);
// Create a compatible DC and a new compatible bitmap.
using var destinationDC = new Gdi32.CreateDcScope(screenDC);
Gdi32.HBITMAP bitmap = Gdi32.CreateCompatibleBitmap(screenDC, bm.Size.Width, bm.Size.Height);
// Select the new bitmap into a compatible DC and render the blt the original bitmap.
using var destinationBitmapSelection = new Gdi32.SelectObjectScope(destinationDC, bitmap);
Gdi32.BitBlt(
destinationDC,
0,
0,
bm.Size.Width,
bm.Size.Height,
sourceDC,
0,
0,
Gdi32.ROP.SRCCOPY);
return(bitmap);
}
internal static Graphics CreateGraphics(this Gdi32.CreateDcScope hdc) => Graphics.FromHdcInternal(hdc.HDC.Handle);
internal static Color GetNearestColor(this Gdi32.CreateDcScope hdc, Color color) => GetNearestColor(hdc.HDC, color);
internal static void DrawLine(this Gdi32.CreateDcScope hdc, Gdi32.HPEN pen, int x1, int y1, int x2, int y2) => DrawLine(hdc.HDC, pen, x1, y1, x2, y2);
internal static void FillRectangle(this Gdi32.CreateDcScope hdc, Rectangle rectangle, Gdi32.HBRUSH hbrush) => FillRectangle(hdc.HDC, rectangle, hbrush);
internal static void DrawRectangle(this Gdi32.CreateDcScope hdc, Rectangle rectangle, Gdi32.HPEN hpen) => DrawRectangle(hdc.HDC, rectangle, hpen);
