public GDIBitmap(string filename)
{
FreeImage img = new FreeImage(filename);
IntPtr deskDC = NativeUser32Api.GetDC(new IntPtr(0));
_destDC = NativeGdi32Api.CreateCompatibleDC(deskDC);
IntPtr oldObj = NativeGdi32Api.SelectObject(_destDC, _hBmp);
_hBmp = NativeGdi32Api.CreateCompatibleBitmap(_destDC, img.Width, img.Height);
img.PaintToDevice(_destDC, 0, 0, img.Width, img.Height, 0, 0, 0, img.Height, 0);
NativeGdi32Api.SelectObject(_destDC, oldObj);
_width = img.Width;
_height = img.Height;
NativeGdi32Api.DeleteDC(deskDC);
//NativeGdi32Api.DeleteDC(destDC);
img.Dispose();
}
protected void Init(int width, int height, IntPtr hdc)
{
mWidth = width;
mHeight = height;
mhDC = NativeGdi32Api.CreateCompatibleDC(hdc);
mhBMP = NativeGdi32Api.CreateCompatibleBitmap(hdc, width, height);
IntPtr ret = NativeGdi32Api.SelectObject(mhDC, mhBMP);
_OldBmp = ret;
if (mhDC == (IntPtr)0)
{
MessageBox.Show("hDC creation FAILED!!");
}
if (mhDC == (IntPtr)0)
{
MessageBox.Show("hBMP creation FAILED!!");
}
}