public string chooseColor(ScriptScopeContext scope, string defaultColor) => scope.DoWindow(w => {
var cc = new ChooseColor();
cc.lStructSize = Marshal.SizeOf(cc);
var lpCustColors = Marshal.AllocCoTaskMem(16 * sizeof(int));
try
{
Marshal.Copy(customColors, 0, lpCustColors, 16);
cc.hwndOwner = w;
cc.lpCustColors = lpCustColors;
cc.Flags = ChooseColorFlags.FullOpen | ChooseColorFlags.RgbInit;
var c = ColorTranslator.FromHtml(defaultColor);
cc.rgbResult = ColorTranslator.ToWin32(c);
if (!ChooseColor(ref cc))
{
return((string)null);
}
c = ColorTranslator.FromWin32(cc.rgbResult);
return(ColorTranslator.ToHtml(c));
}
finally
{
Marshal.FreeCoTaskMem(lpCustColors);
}
});
internal static extern bool ChooseColor(ref ChooseColor cc);