internal static void DestroyIcon(NativeMethods.IconHandle hIcon)
{
if (IntDestroyIcon(hIcon) == false)
{
throw new Win32Exception();
}
}
public static void GetDefaultIconHandles(out NativeMethods.IconHandle largeIconHandle, out NativeMethods.IconHandle smallIconHandle)
{
largeIconHandle = null;
smallIconHandle = null;
SecurityHelper.DemandUIWindowPermission();
string moduleFileName = UnsafeNativeMethods.GetModuleFileName(default(HandleRef));
int num = UnsafeNativeMethods.ExtractIconEx(moduleFileName, 0, out largeIconHandle, out smallIconHandle, 1);
}
/// <returns></returns>
public static void GetDefaultIconHandles(out NativeMethods.IconHandle largeIconHandle, out NativeMethods.IconHandle smallIconHandle)
{
largeIconHandle = null;
smallIconHandle = null;
// Get the handle of the module that created the running process.
string iconModuleFile = UnsafeNativeMethods.GetModuleFileName(new HandleRef());
// We don't really care about the return value. Handles will be invalid on error.
int extractedCount = UnsafeNativeMethods.ExtractIconEx(iconModuleFile, 0, out largeIconHandle, out smallIconHandle, 1);
}
//-------------------------------------------------------------------------------
//
// Private Methods
//
//-------------------------------------------------------------------------------
#region Private Methods
/// <summary>
/// Create a Cursor from a Drawing object
/// </summary>
/// <param name="drawing">Drawing</param>
/// <param name="hotspot">Cursor Hotspot</param>
/// <returns></returns>
private static Cursor CreateCursorFromDrawing(Drawing drawing, Point hotspot)
{
// A default cursor.
Cursor cursor = Cursors.Arrow;
Rect drawingBounds = drawing.Bounds;
double originalWidth = drawingBounds.Width;
double originalHeight = drawingBounds.Height;
// Cursors like to be multiples of 8 in dimension.
int width = IconHelper.AlignToBytes(drawingBounds.Width, 1);
int height = IconHelper.AlignToBytes(drawingBounds.Height, 1);
// Now inflate the drawing bounds to the new dimension.
drawingBounds.Inflate((width - originalWidth) / 2, (height - originalHeight) / 2);
// Translate the hotspot accordingly.
int xHotspot = (int)Math.Round(hotspot.X - drawingBounds.Left);
int yHotspot = (int)Math.Round(hotspot.Y - drawingBounds.Top);
// Create a DrawingVisual which represents the cursor drawing.
DrawingVisual cursorDrawingVisual = CreateCursorDrawingVisual(drawing, width, height);
// Render the cursor visual to a bitmap
RenderTargetBitmap rtb = RenderVisualToBitmap(cursorDrawingVisual, width, height);
// Get pixel data in Bgra32 fromat from the bitmap
byte[] pixels = GetPixels(rtb, width, height);
NativeMethods.IconHandle finalCursor = IconHelper.CreateIconCursor(pixels, width, height, xHotspot, yHotspot, false);
if (finalCursor.IsInvalid)
{
// Return the default cursor if above is failed.
return(Cursors.Arrow);
}
cursor = CursorInteropHelper.CriticalCreate(finalCursor);
return(cursor);
}
private static Cursor CreateCursorFromDrawing(Drawing drawing, Point hotspot)
{
Cursor arrow = Cursors.Arrow;
Rect bounds = drawing.Bounds;
double width = bounds.Width;
double height = bounds.Height;
int num = IconHelper.AlignToBytes(bounds.Width, 1);
int num2 = IconHelper.AlignToBytes(bounds.Height, 1);
bounds.Inflate(((double)num - width) / 2.0, ((double)num2 - height) / 2.0);
int xHotspot = (int)Math.Round(hotspot.X - bounds.Left);
int yHotspot = (int)Math.Round(hotspot.Y - bounds.Top);
DrawingVisual visual = PenCursorManager.CreateCursorDrawingVisual(drawing, num, num2);
RenderTargetBitmap rtb = PenCursorManager.RenderVisualToBitmap(visual, num, num2);
byte[] pixels = PenCursorManager.GetPixels(rtb, num, num2);
NativeMethods.IconHandle iconHandle = IconHelper.CreateIconCursor(pixels, num, num2, xHotspot, yHotspot, false);
if (iconHandle.IsInvalid)
{
return(Cursors.Arrow);
}
return(CursorInteropHelper.CriticalCreate(iconHandle));
}
private static extern bool IntDestroyIcon(NativeMethods.IconHandle hIcon);
public static void GetIconHandlesFromImageSource(ImageSource image, out NativeMethods.IconHandle largeIconHandle, out NativeMethods.IconHandle smallIconHandle)
{
EnsureSystemMetrics();
largeIconHandle = CreateIconHandleFromImageSource(image, s_iconSize);
smallIconHandle = CreateIconHandleFromImageSource(image, s_smallIconSize);
}