public static Boolean TryCreate(Boolean isIcon, ResourceLang lang, Byte[] rawData, out IconCursorImageResourceData typed)
{
// rawData is an ICONIMAGE structure OR a PNG image
// if it's a PNG image it's easy enough:
if (PngImageResourceData.HasPngSignature(rawData))
{
Image image;
if (!ImageResourceData.TryCreateImage(rawData, out image))
{
typed = null; return(false);
}
typed = new IconCursorImageResourceData(image, lang, rawData)
{
IsIcon = isIcon
};
return(true);
}
typed = new IconCursorImageResourceData(lang, rawData)
{
IsIcon = isIcon
};
return(true);
}
public static Boolean TryCreate(Boolean isIcon, ResourceLang lang, Byte[] rawData, out String message, out IconCursorImageResourceData typed)
{
message = null;
// rawData is an ICONIMAGE structure OR a PNG image
// if it's a PNG image it's easy enough:
if (PngImageResourceData.HasPngSignature(rawData))
{
Image image;
if (!ImageResourceData.TryCreateImage(rawData, out image))
{
typed = null; return(false);
}
typed = new IconCursorImageResourceData(IntPtr.Zero, image, lang, rawData)
{
Size = image.Size
};
return(true);
}
// "Almost" cheating; this uses Win32's icon function, but in a nice way that doesn't break my conceptual model
// and to think I'd need to manually process the DIB information to extract and recreate Bitmaps
// although I might want to do that in future if I wanted to display the AND and XOR masks separately
IntPtr p = Marshal.AllocHGlobal(rawData.Length);
Marshal.Copy(rawData, 0, p, rawData.Length);
IntPtr hIcon = NativeMethods.CreateIconFromResource(p, (uint)rawData.Length, isIcon);
if (hIcon == IntPtr.Zero)
{
message = NativeMethods.GetLastErrorString();
typed = null;
return(false);
}
Icon icon = Icon.FromHandle(hIcon);
// because the Icon is born out of unmanaged data I cannot free the handle here; do it in the finaliser
// on Windows XP x86 this doesn't cause a problem by freeing it here, but on Windows Server 2008 x64 it causes the Icon to fail
// UPDATE: okay, apparently not. Even after moving that free instruction it still fails on WS2008x64
typed = new IconCursorImageResourceData(p, icon, lang, rawData);
return(true);
}
