public static extern IntPtr ImageList_GetIcon(IntPtr himl, int i, IMAGELISTDRAWFLAGS flags);
/// <summary>
/// Draws the image indicated by the given index on the specified <see cref="Graphics"/> at the specified location.
/// </summary>
/// <param name="imageList">The image list.</param>
/// <param name="g">The <see cref="Graphics"/> to draw on.</param>
/// <param name="bounds">The bounds in which to draw the image. Set width and height to 0 to draw image at full size.</param>
/// <param name="index">The index of the image in the ImageList to draw.</param>
/// <param name="bgColor">The background color of the image. This parameter can be a <see cref="Color"/> value or <see cref="ImageListDrawColor.None"/>
/// so the image is drawn transparently or <see cref="ImageListDrawColor.Default"/> so the image is drawn using the background color of the image list.</param>
/// <param name="fgColor">The foreground color of the image. This parameter can be a <see cref="Color"/> value or <see cref="ImageListDrawColor.None"/>
/// so the image is blended with the color of the destination device context or <see cref="ImageListDrawColor.Default"/> so the image is drawn using the system highlight color as the foreground color.</param>
/// <param name="style">The drawing style.</param>
/// <param name="overlayImageIndex">Optional index of an overlay image.</param>
/// <exception cref="System.ComponentModel.Win32Exception">Unable to draw the image with defined parameters.</exception>
public static void Draw(this ImageList imageList, Graphics g, Rectangle bounds, int index, ImageListDrawColor bgColor, ImageListDrawColor fgColor, IMAGELISTDRAWFLAGS style = IMAGELISTDRAWFLAGS.ILD_NORMAL, int overlayImageIndex = 0)
{
if (index < 0 || index >= imageList.Images.Count)
{
throw new ArgumentOutOfRangeException(nameof(index));
}
if (overlayImageIndex < 0 || overlayImageIndex > imageList.GetOverlayCount())
{
throw new ArgumentOutOfRangeException(nameof(overlayImageIndex));
}
using (var hg = new SafeDCHandle(g))
if (!ImageList_DrawEx(new HandleRef(imageList, imageList.Handle), index, hg, bounds.X, bounds.Y, bounds.Width, bounds.Height, bgColor, fgColor, style | (IMAGELISTDRAWFLAGS)(overlayImageIndex << 8)))
{
throw new Win32Exception();
}
}
public static extern bool ImageList_DrawEx(HandleRef himl, int i, SafeDCHandle hdcDst, int x, int y, int dx, int dy,
uint rgbBk, uint rgbFg, IMAGELISTDRAWFLAGS fStyle);
/// <summary>Draws the image indicated by the given index on the specified <see cref="Graphics"/> at the specified location.</summary>
/// <param name="imageList">The image list.</param>
/// <param name="g">The <see cref="Graphics"/> to draw on.</param>
/// <param name="bounds">The bounds in which to draw the image. Set width and height to 0 to draw image at full size.</param>
/// <param name="index">The index of the image in the ImageList to draw.</param>
/// <param name="bgColor">
/// The background color of the image. This parameter can be a <see cref="Color"/> value or <see cref="COLORREF.None"/> so the image is drawn
/// transparently or <see cref="COLORREF.Default"/> so the image is drawn using the background color of the image list.
/// </param>
/// <param name="fgColor">
/// The foreground color of the image. This parameter can be a <see cref="Color"/> value or <see cref="COLORREF.None"/> so the image is blended
/// with the color of the destination device context or <see cref="COLORREF.Default"/> so the image is drawn using the system highlight color
/// as the foreground color.
/// </param>
/// <param name="style">The drawing style.</param>
/// <param name="overlayImageIndex">Optional index of an overlay image.</param>
/// <exception cref="System.ComponentModel.Win32Exception">Unable to draw the image with defined parameters.</exception>
public static void Draw(this ImageList imageList, Graphics g, Rectangle bounds, int index, COLORREF bgColor, COLORREF fgColor, IMAGELISTDRAWFLAGS style = IMAGELISTDRAWFLAGS.ILD_NORMAL, int overlayImageIndex = 0)
{
if (index < 0 || index >= imageList.Images.Count)
{
throw new ArgumentOutOfRangeException(nameof(index));
}
if (overlayImageIndex < 0 || overlayImageIndex > imageList.GetOverlayCount())
{
throw new ArgumentOutOfRangeException(nameof(overlayImageIndex));
}
using (var hg = new SafeHDC(g))
{
var p = new IMAGELISTDRAWPARAMS(hg, bounds, index, bgColor, style | (IMAGELISTDRAWFLAGS)INDEXTOOVERLAYMASK(overlayImageIndex))
{
rgbFg = fgColor
};
imageList.GetIImageList().Draw(p);
}
}
