public Icon GetIcon(int index, ImageListDrawOptions options)
{
IntPtr hIcon;
var hresult = this._ImageList.GetIcon(index, options, out hIcon);
Marshal.ThrowExceptionForHR(hresult);
if (hIcon != IntPtr.Zero)
{
return(Icon.FromHandle(hIcon));
}
else
{
throw new Win32Exception();
}
}
private void DrawInternal(IntPtr hdc, int index, int overlayIndex, ImageListDrawOptions options, ImageListDrawStates state, int alpha, Point location, int newSize)
{
var param = new IMAGELISTDRAWPARAMS();
param.cbSize = Marshal.SizeOf(param);
param.himl = this.Handle;
param.hdcDst = hdc;
param.rgbBk = -1;
param.i = index;
param.x = location.X;
param.y = location.Y;
param.cx = param.cy = newSize == -1 ? 0 : newSize;
param.fStyle = ((int)options | (overlayIndex << 8) | (newSize == -1 ? 0 : (int)ImageListDrawOptions.Scale));
param.fState = state;
param.Frame = alpha;
var hresult = this._ImageList.Draw(ref param);
Marshal.ThrowExceptionForHR(hresult);
}
public void Draw(IntPtr hdc, int index, int overlayIndex, ImageListDrawOptions options, Point location, int newSize = -1)
{
this.DrawInternal(hdc, index, overlayIndex, options, ImageListDrawStates.Normal, 0, location, newSize);
}
public Icon GetIcon(IntPtr path, ImageListDrawOptions options)
{
return(this.GetIcon(this.GetIconIndex(path), options));
}
/*
[Obsolete("Not Used, Try to Delete!!!", true)]
public void Draw(IntPtr hdc, int index, int overlayIndex, ImageListDrawOptions options, Point location, int newSize = -1) {
this.DrawInternal(hdc, index, overlayIndex, options, ImageListDrawStates.Normal, 0, location, newSize);
}
*/
/// <summary>
/// Draws the icon
/// </summary>
/// <param name="hdc">A handle to the destination device context.</param>
/// <param name="index">The zero-based index of the image to be drawn.</param>
/// <param name="overlayIndex">The index of the overlay</param>
/// <param name="options"></param>
/// <param name="state">A flag that specifies the drawing state. This member can contain one or more image list state flags. You must use comctl32.dll version 6 to use this member. See the Remarks.</param>
/// <param name="alpha">Used with the alpha blending effect.</param>
/// <param name="location">The x and y coordinates that specifies where the image is drawn.</param>
/// <param name="newSize">The new size of the image (Double Check)</param>
private void DrawInternal(IntPtr hdc, int index, int overlayIndex, ImageListDrawOptions options, ImageListDrawStates state, int alpha, Point location, int newSize) {
var param = new IMAGELISTDRAWPARAMS() {
//himl = this.Handle;
himl = this.Handle,
hdcDst = hdc,
rgbBk = -1,
i = index,
x = location.X,
y = location.Y,
fStyle = ((int)options | (overlayIndex << 8) | (newSize == -1 ? 0 : (int)ImageListDrawOptions.Scale)),
fState = state,
Frame = alpha
};
param.cx = param.cy = newSize == -1 ? 0 : newSize;
param.cbSize = Marshal.SizeOf(param);
var hresult = this._ImageList.Draw(ref param);
Marshal.ThrowExceptionForHR(hresult);
}
