protected override bool RunDialog(IntPtr hwndOwner)
{
NativeMethods.WndProc hookProcPtr = new NativeMethods.WndProc(HookProc);
NativeMethods.CHOOSECOLOR cc = new NativeMethods.CHOOSECOLOR();
IntPtr custColorPtr = Marshal.AllocCoTaskMem(64);
try
{
Marshal.Copy(customColors, 0, custColorPtr, 16);
cc.hwndOwner = hwndOwner;
cc.hInstance = Instance;
cc.rgbResult = ColorTranslator.ToWin32(color);
cc.lpCustColors = custColorPtr;
int flags = Options | (NativeMethods.CC_RGBINIT | NativeMethods.CC_ENABLEHOOK);
// Our docs say AllowFullOpen takes precedence over FullOpen; ChooseColor implements the opposite
if (!AllowFullOpen)
{
flags &= ~NativeMethods.CC_FULLOPEN;
}
cc.Flags = flags;
cc.lpfnHook = hookProcPtr;
if (!SafeNativeMethods.ChooseColor(cc))
{
return(false);
}
if (cc.rgbResult != ColorTranslator.ToWin32(color))
{
color = ColorTranslator.FromOle(cc.rgbResult);
}
Marshal.Copy(custColorPtr, customColors, 0, 16);
return(true);
}
finally
{
Marshal.FreeCoTaskMem(custColorPtr);
}
}