public Image this[int index] {
get {
if (index < 0 || index >= Count)
{
throw new ArgumentOutOfRangeException(SR.GetString(SR.InvalidArgument,
"index",
index.ToString()));
}
return(owner.GetBitmap(index));
}
set {
if (index < 0 || index >= Count)
{
throw new ArgumentOutOfRangeException(SR.GetString(SR.InvalidArgument,
"index",
index.ToString()));
}
if (value == null)
{
throw new ArgumentNullException("value");
}
if (!(value is Bitmap))
{
throw new ArgumentException(SR.GetString(SR.ImageListBitmap));
}
AssertInvariant();
Bitmap bitmap = (Bitmap)value;
if (owner.UseTransparentColor)
{
// Since there's no ImageList_ReplaceMasked, we need to generate
// a transparent bitmap
Bitmap source = bitmap;
bitmap = (Bitmap)bitmap.Clone();
bitmap.MakeTransparent(owner.transparentColor);
}
IntPtr hMask = ControlPaint.CreateHBitmapTransparencyMask(bitmap);
IntPtr hBitmap = ControlPaint.CreateHBitmapColorMask(bitmap, hMask);
bool ok = SafeNativeMethods.ImageList_Replace(new HandleRef(owner, owner.Handle), index, new HandleRef(null, hBitmap), new HandleRef(null, hMask));
SafeNativeMethods.DeleteObject(new HandleRef(null, hBitmap));
SafeNativeMethods.DeleteObject(new HandleRef(null, hMask));
if (!ok)
{
throw new InvalidOperationException(SR.GetString(SR.ImageListReplaceFailed));
}
}
}
public Image this[int index]
{
get
{
if ((index < 0) || (index >= this.Count))
{
throw new ArgumentOutOfRangeException("index", System.Windows.Forms.SR.GetString("InvalidArgument", new object[] { "index", index.ToString(CultureInfo.CurrentCulture) }));
}
return(this.owner.GetBitmap(index));
}
set
{
if ((index < 0) || (index >= this.Count))
{
throw new ArgumentOutOfRangeException("index", System.Windows.Forms.SR.GetString("InvalidArgument", new object[] { "index", index.ToString(CultureInfo.CurrentCulture) }));
}
if (value == null)
{
throw new ArgumentNullException("value");
}
if (!(value is Bitmap))
{
throw new ArgumentException(System.Windows.Forms.SR.GetString("ImageListBitmap"));
}
Bitmap bitmap = (Bitmap)value;
bool flag = false;
if (this.owner.UseTransparentColor)
{
bitmap = (Bitmap)bitmap.Clone();
bitmap.MakeTransparent(this.owner.transparentColor);
flag = true;
}
try
{
IntPtr monochromeMask = ControlPaint.CreateHBitmapTransparencyMask(bitmap);
IntPtr handle = ControlPaint.CreateHBitmapColorMask(bitmap, monochromeMask);
bool flag2 = System.Windows.Forms.SafeNativeMethods.ImageList_Replace(new HandleRef(this.owner, this.owner.Handle), index, new HandleRef(null, handle), new HandleRef(null, monochromeMask));
System.Windows.Forms.SafeNativeMethods.DeleteObject(new HandleRef(null, handle));
System.Windows.Forms.SafeNativeMethods.DeleteObject(new HandleRef(null, monochromeMask));
if (!flag2)
{
throw new InvalidOperationException(System.Windows.Forms.SR.GetString("ImageListReplaceFailed"));
}
}
finally
{
if (flag)
{
bitmap.Dispose();
}
}
}
}
private int AddToHandle(Original original, Bitmap bitmap)
{
IntPtr monochromeMask = ControlPaint.CreateHBitmapTransparencyMask(bitmap);
IntPtr handle = ControlPaint.CreateHBitmapColorMask(bitmap, monochromeMask);
int num = System.Windows.Forms.SafeNativeMethods.ImageList_Add(new HandleRef(this, this.Handle), new HandleRef(null, handle), new HandleRef(null, monochromeMask));
System.Windows.Forms.SafeNativeMethods.DeleteObject(new HandleRef(null, handle));
System.Windows.Forms.SafeNativeMethods.DeleteObject(new HandleRef(null, monochromeMask));
if (num == -1)
{
throw new InvalidOperationException(System.Windows.Forms.SR.GetString("ImageListAddFailed"));
}
return(num);
}
// Adds bitmap to the Imagelist handle...
//
private int AddToHandle(Original original, Bitmap bitmap)
{
Debug.Assert(HandleCreated, "Calling AddToHandle when there is no handle");
IntPtr hMask = ControlPaint.CreateHBitmapTransparencyMask(bitmap);
IntPtr hBitmap = ControlPaint.CreateHBitmapColorMask(bitmap, hMask);
int index = SafeNativeMethods.ImageList_Add(new HandleRef(this, Handle), new HandleRef(null, hBitmap), new HandleRef(null, hMask));
SafeNativeMethods.DeleteObject(new HandleRef(null, hBitmap));
SafeNativeMethods.DeleteObject(new HandleRef(null, hMask));
if (index == -1)
{
throw new InvalidOperationException(SR.GetString(SR.ImageListAddFailed));
}
return(index);
}