/// <summary>Frees the unmanages memory allocated by PreConfig().</summary>
internal void PostConfig()
{
//Free allocated memory for custom buttons
if (config.pButtons != IntPtr.Zero)
{
for (int i = 0; i < config.cButtons; ++i)
{
unsafe
{
Marshal.DestroyStructure((IntPtr)((byte *)config.pButtons + i * CustomButton.SizeOf()), typeof(CustomButton));
}
}
Marshal.FreeHGlobal(config.pButtons);
}
//Free allocated memory for radio buttons
if (config.pRadioButtons != IntPtr.Zero)
{
for (int i = 0; i < config.cRadioButtons; ++i)
{
unsafe
{
Marshal.DestroyStructure((IntPtr)((byte *)config.pRadioButtons + i * CustomButton.SizeOf()), typeof(CustomButton));
}
}
Marshal.FreeHGlobal(config.pRadioButtons);
}
}
/// <summary>Prepares the internal configuration structure.</summary>
/// <remarks>Allocates some unmanaged memory, must always be followed by a PostConfig() call.</remarks>
internal void PreConfig(IntPtr owner)
{
//Setup configuration structure
config.hwndParent = owner;
config.hInstance = IntPtr.Zero; //will never use resources
config.cbSize = (uint)System.Runtime.InteropServices.Marshal.SizeOf(typeof(NativeMethods.TaskDialogConfig));
//Icons
config.hMainIcon = (IntPtr)CommonIcon;
if (CustomIcon != null)
{
config.dwFlags |= NativeMethods.TaskDialogFlags.TDF_USE_HICON_MAIN;
config.hMainIcon = CustomIcon.Handle;
}
config.hFooterIcon = (IntPtr)FooterCommonIcon;
if (FooterCustomIcon != null)
{
config.dwFlags |= NativeMethods.TaskDialogFlags.TDF_USE_HICON_FOOTER;
config.hFooterIcon = FooterCustomIcon.Handle;
}
//Data
config.dwCommonButtons = CommonButtons;
config.pszWindowTitle = Title;
config.pszMainInstruction = Instruction;
config.pszContent = Content;
config.pszVerificationText = VerificationText;
config.pszExpandedInformation = ExpandedInformation;
config.pszExpandedControlText = ExpandedControlText;
config.pszCollapsedControlText = CollapsedControlText;
config.pszFooter = Footer;
config.cxWidth = Width;
//Special Buttons
if (CustomButtons != null)
{
config.cButtons = (uint)CustomButtons.Length;
config.pButtons = Marshal.AllocHGlobal(CustomButton.SizeOf() * CustomButtons.Length);
for (int i = 0; i < CustomButtons.Length; ++i)
{
unsafe
{
Marshal.StructureToPtr(CustomButtons[i], (IntPtr)((byte *)config.pButtons + i * CustomButton.SizeOf()), false);
}
}
}
else
{
config.cButtons = 0;
config.pButtons = IntPtr.Zero;
}
config.nDefaultButton = DefaultButton;
//Radio Buttons
if (RadioButtons != null)
{
config.cRadioButtons = (uint)RadioButtons.Length;
config.pRadioButtons = Marshal.AllocHGlobal(CustomButton.SizeOf() * RadioButtons.Length);
for (int i = 0; i < RadioButtons.Length; ++i)
{
unsafe
{
Marshal.StructureToPtr(RadioButtons[i], (IntPtr)((byte *)config.pRadioButtons + i * CustomButton.SizeOf()), false);
}
}
}
else
{
config.cRadioButtons = 0;
config.pRadioButtons = IntPtr.Zero;
}
config.nDefaultRadioButton = EnabledRadioButton;
//Callback
config.pfCallback = new NativeMethods.TaskDialogCallback(CommonCallbackProc);
config.lpCallbackData = IntPtr.Zero;
}
