/// <summary>
/// Gets or sets a value indicating whether the background image of the <see cref="ListView"/> should be tiled.
/// </summary>
/// <param name="listView"></param>
/// <returns>true if the background image of the <see cref="ListView"/> should be tiled; otherwise, false.
/// The default is false.</returns>
public static bool GetBackgroundImageTiled(this ListView listView)
{
LVBKIMAGE lvBkImage = new LVBKIMAGE();
//lvBkImage.ulFlags = LVBKIF.SOURCE_HBITMAP;
NativeMethods.SendMessage(listView.Handle, LVM_GETBKIMAGE, 0, ref lvBkImage);
if ((lvBkImage.ulFlags & LVBKIF.STYLE_TILE) == LVBKIF.STYLE_TILE)
{
return(true);
}
else
{
return(false);
}
}
/// <summary>
/// Gets or sets the background image displayed in the <see cref="ListView"/>.
/// </summary>
/// <param name="listView"></param>
/// <returns></returns>
public static Bitmap GetBackgroundImage(this ListView listView)
{
LVBKIMAGE lvBkImage = new LVBKIMAGE();
//lvBkImage.ulFlags = LVBKIF.SOURCE_HBITMAP;
NativeMethods.SendMessage(listView.Handle, LVM_GETBKIMAGE, 0, ref lvBkImage);
if (lvBkImage.hbm == IntPtr.Zero)
{
return(null);
}
else
{
return(Bitmap.FromHbitmap(lvBkImage.hbm));
}
}
/// <summary>
/// Sets the background image displayed in the <see cref="ListView"/>.
/// </summary>
/// <param name="listView"></param>
/// <param name="bitmap">A <see cref="Bitmap"/> that represents the image to display in the background of the control.</param>
/// <param name="tileLayout">Sets a value indicating whether the background image of the <see cref="ListView"/> should be tiled.</param>
public static void SetBackgroundImage(this ListView listView, Bitmap bitmap, bool tileLayout)
{
LVBKIMAGE lvBkImage = new LVBKIMAGE();
if (bitmap == null)
{
lvBkImage.ulFlags = 0;
}
else
{
lvBkImage.ulFlags = LVBKIF.SOURCE_HBITMAP | (tileLayout ? LVBKIF.STYLE_TILE : 0);
lvBkImage.hbm = bitmap.GetHbitmap();
//lvBkImage.xOffsetPercent = xOffsetPercent;
//lvBkImage.yOffsetPercent = yOffsetPercent;
}
NativeMethods.SendMessage(listView.Handle, LVM_SETBKIMAGE, 0, ref lvBkImage);
}
internal static extern int SendMessage(IntPtr hWnd, int Msg, int wParam, ref LVBKIMAGE lParam);