internal static Image CreateImageObject(IntPtr nativeImage)
{
Image image;
int type = -1;
int status = SafeNativeMethods.Gdip.GdipGetImageType(new HandleRef(null, nativeImage), out type);
if (status != SafeNativeMethods.Gdip.Ok)
{
throw SafeNativeMethods.Gdip.StatusException(status);
}
switch ((ImageTypeEnum)type)
{
case ImageTypeEnum.Bitmap:
image = Bitmap.FromGDIplus(nativeImage);
break;
case ImageTypeEnum.Metafile:
image = Metafile.FromGDIplus(nativeImage);
break;
default:
throw new ArgumentException(SR.Format(SR.InvalidImage));
}
return(image);
}
public Bitmap Clone(RectangleF rect, PixelFormat format)
{
//validate the rect
if (rect.Width == 0 || rect.Height == 0)
{
throw new ArgumentException(SR.GetString(SR.GdiplusInvalidRectangle, rect.ToString()));
}
IntPtr dstHandle = IntPtr.Zero;
int status = SafeNativeMethods.Gdip.GdipCloneBitmapArea(
rect.X,
rect.Y,
rect.Width,
rect.Height,
unchecked ((int)format),
new HandleRef(this, nativeImage),
out dstHandle);
if (status != SafeNativeMethods.Gdip.Ok || dstHandle == IntPtr.Zero)
{
throw SafeNativeMethods.Gdip.StatusException(status);
}
return(Bitmap.FromGDIplus(dstHandle));
}
/// <summary>
/// Creates a <see cref='Bitmap'/> from the specified Windows handle with the specified color palette.
/// </summary>
public static Bitmap FromHbitmap(IntPtr hbitmap, IntPtr hpalette)
{
IntPtr bitmap = IntPtr.Zero;
int status = SafeNativeMethods.Gdip.GdipCreateBitmapFromHBITMAP(new HandleRef(null, hbitmap), new HandleRef(null, hpalette), out bitmap);
if (status != SafeNativeMethods.Gdip.Ok)
{
throw SafeNativeMethods.Gdip.StatusException(status);
}
return(Bitmap.FromGDIplus(bitmap));
}
public static Bitmap FromHbitmap(IntPtr hbitmap, IntPtr hpalette)
{
System.Drawing.IntSecurity.ObjectFromWin32Handle.Demand();
IntPtr zero = IntPtr.Zero;
int status = SafeNativeMethods.Gdip.GdipCreateBitmapFromHBITMAP(new HandleRef(null, hbitmap), new HandleRef(null, hpalette), out zero);
if (status != 0)
{
throw SafeNativeMethods.Gdip.StatusException(status);
}
return(Bitmap.FromGDIplus(zero));
}
/// <include file='doc\Bitmap.uex' path='docs/doc[@for="Bitmap.FromHicon"]/*' />
/// <devdoc>
/// Creates a <see cref='System.Drawing.Bitmap'/> from a Windows handle to an
/// Icon.
/// </devdoc>
public static Bitmap FromHicon(IntPtr hicon)
{
IntPtr bitmap = IntPtr.Zero;
int status = SafeNativeMethods.Gdip.GdipCreateBitmapFromHICON(new HandleRef(null, hicon), out bitmap);
if (status != SafeNativeMethods.Gdip.Ok)
{
throw SafeNativeMethods.Gdip.StatusException(status);
}
return(Bitmap.FromGDIplus(bitmap));
}
/// <include file='doc\Bitmap.uex' path='docs/doc[@for="Bitmap.FromResource"]/*' />
/// <devdoc>
/// </devdoc>
public static Bitmap FromResource(IntPtr hinstance, String bitmapName)
{
IntPtr bitmap;
IntPtr name = Marshal.StringToHGlobalUni(bitmapName);
int status = SafeNativeMethods.Gdip.GdipCreateBitmapFromResource(new HandleRef(null, hinstance),
new HandleRef(null, name),
out bitmap);
Marshal.FreeHGlobal(name);
if (status != SafeNativeMethods.Gdip.Ok)
{
throw SafeNativeMethods.Gdip.StatusException(status);
}
return(Bitmap.FromGDIplus(bitmap));
}
internal static Image CreateImageObject(IntPtr nativeImage)
{
int type = -1;
int status = SafeNativeMethods.Gdip.GdipGetImageType(new HandleRef(null, nativeImage), out type);
if (status != 0)
{
throw SafeNativeMethods.Gdip.StatusException(status);
}
switch (((ImageTypeEnum)type))
{
case ImageTypeEnum.Bitmap:
return(Bitmap.FromGDIplus(nativeImage));
case ImageTypeEnum.Metafile:
return(Metafile.FromGDIplus(nativeImage));
}
throw new ArgumentException(System.Drawing.SR.GetString("InvalidImage"));
}
/// <include file='doc\Bitmap.uex' path='docs/doc[@for="Bitmap.Clone1"]/*' />
/// <devdoc>
/// <para>
/// Creates a copy of the section of this
/// Bitmap defined by <paramref term="rect"/> with a specified <see cref='System.Drawing.Imaging.PixelFormat'/>.
/// </para>
/// </devdoc>
// float version
public Bitmap Clone(RectangleF rect, PixelFormat format)
{
IntPtr dstHandle = IntPtr.Zero;
int status = SafeNativeMethods.GdipCloneBitmapArea(
rect.X,
rect.Y,
rect.Width,
rect.Height,
(int)format,
new HandleRef(this, nativeImage),
out dstHandle);
if (status != SafeNativeMethods.Ok || dstHandle == IntPtr.Zero)
{
throw SafeNativeMethods.StatusException(status);
}
return(Bitmap.FromGDIplus(dstHandle));
}
