internal NativeTaskDialogSettings()
{
NativeConfiguration = new TaskDialogNativeMethods.TaskDialogConfiguration();
// Apply standard settings.
NativeConfiguration.size = (uint)Marshal.SizeOf(NativeConfiguration);
NativeConfiguration.parentHandle = IntPtr.Zero;
NativeConfiguration.instance = IntPtr.Zero;
NativeConfiguration.taskDialogFlags = TaskDialogNativeMethods.TaskDialogOptions.AllowCancel;
NativeConfiguration.commonButtons = TaskDialogNativeMethods.TaskDialogCommonButtons.Ok;
NativeConfiguration.mainIcon = new TaskDialogNativeMethods.IconUnion(0);
NativeConfiguration.footerIcon = new TaskDialogNativeMethods.IconUnion(0);
NativeConfiguration.width = TaskDialogDefaults.IdealWidth;
// Zero out all the custom button fields.
NativeConfiguration.buttonCount = 0;
NativeConfiguration.radioButtonCount = 0;
NativeConfiguration.buttons = IntPtr.Zero;
NativeConfiguration.radioButtons = IntPtr.Zero;
NativeConfiguration.defaultButtonIndex = 0;
NativeConfiguration.defaultRadioButtonIndex = 0;
// Various text defaults.
NativeConfiguration.windowTitle = TaskDialogDefaults.Caption;
NativeConfiguration.mainInstruction = TaskDialogDefaults.MainInstruction;
NativeConfiguration.content = TaskDialogDefaults.Content;
NativeConfiguration.verificationText = null;
NativeConfiguration.expandedInformation = null;
NativeConfiguration.expandedControlText = null;
NativeConfiguration.collapsedControlText = null;
NativeConfiguration.footerText = null;
}
/// <summary>
/// Sets important text properties.
/// </summary>
/// <param name="dialogConfig">An instance of a <see cref="TaskDialogNativeMethods.TaskDialogConfiguration"/> object.</param>
private void ApplyTextConfiguration(TaskDialogNativeMethods.TaskDialogConfiguration dialogConfig)
{
// note that nulls or empty strings are fine here.
dialogConfig.content = text;
dialogConfig.windowTitle = caption;
dialogConfig.mainInstruction = instructionText;
dialogConfig.expandedInformation = detailsExpandedText;
dialogConfig.expandedControlText = detailsExpandedLabel;
dialogConfig.collapsedControlText = detailsCollapsedLabel;
dialogConfig.footerText = footerText;
dialogConfig.verificationText = checkBoxText;
}
// Configuration is applied at dialog creation time.
internal NativeTaskDialog(NativeTaskDialogSettings settings, TaskDialog outerDialog)
{
nativeDialogConfig = settings.NativeConfiguration;
this.settings = settings;
// Wireup dialog proc message loop for this instance.
nativeDialogConfig.callback = new TaskDialogNativeMethods.TaskDialogCallback(DialogProc);
ShowState = DialogShowState.PreShow;
// Keep a reference to the outer shell, so we can notify.
this.outerDialog = outerDialog;
}
private void ApplyGeneralNativeConfiguration(TaskDialogNativeMethods.TaskDialogConfiguration dialogConfig)
{
// If an owner wasn't specifically specified,
// we'll use the app's main window.
if (ownerWindow != IntPtr.Zero)
{
dialogConfig.parentHandle = ownerWindow;
}
// Other miscellaneous sets.
dialogConfig.mainIcon = new TaskDialogNativeMethods.IconUnion((int)icon);
dialogConfig.footerIcon = new TaskDialogNativeMethods.IconUnion((int)footerIcon);
dialogConfig.commonButtons = (TaskDialogNativeMethods.TaskDialogCommonButtons)standardButtons;
}
private void ApplyOptionConfiguration(TaskDialogNativeMethods.TaskDialogConfiguration dialogConfig)
{
// Handle options - start with no options set.
TaskDialogNativeMethods.TaskDialogOptions options = TaskDialogNativeMethods.TaskDialogOptions.None;
if (cancelable)
{
options |= TaskDialogNativeMethods.TaskDialogOptions.AllowCancel;
}
if (footerCheckBoxChecked.HasValue && footerCheckBoxChecked.Value)
{
options |= TaskDialogNativeMethods.TaskDialogOptions.CheckVerificationFlag;
}
if (hyperlinksEnabled)
{
options |= TaskDialogNativeMethods.TaskDialogOptions.EnableHyperlinks;
}
if (detailsExpanded)
{
options |= TaskDialogNativeMethods.TaskDialogOptions.ExpandedByDefault;
}
if (Tick != null)
{
options |= TaskDialogNativeMethods.TaskDialogOptions.UseCallbackTimer;
}
if (startupLocation == TaskDialogStartupLocation.CenterOwner)
{
options |= TaskDialogNativeMethods.TaskDialogOptions.PositionRelativeToWindow;
}
// Note: no validation required, as we allow this to
// be set even if there is no expanded information
// text because that could be added later.
// Default for Win32 API is to expand into (and after)
// the content area.
if (expansionMode == TaskDialogExpandedDetailsLocation.ExpandFooter)
{
options |= TaskDialogNativeMethods.TaskDialogOptions.ExpandFooterArea;
}
// Finally, apply options to config.
dialogConfig.taskDialogFlags = options;
}
internal static extern HResult TaskDialogIndirect(
[In] TaskDialogNativeMethods.TaskDialogConfiguration taskConfig,
[Out] out int button,
[Out] out int radioButton,
[MarshalAs(UnmanagedType.Bool), Out] out bool verificationFlagChecked);