C++/winRT xaml ContentDialog example - c++-winrt

Question

The documentation shows this C# snippet:
async void DisplayDeleteFileDialog(){
ContentDialog deleteFileDialog = new ContentDialog{
Title = "Delete file permanently?",
Content = "If you delete this file, you won't be able to recover it. Do you want to delete it?",
PrimaryButtonText = "Delete",
CloseButtonText = "Cancel"
};
ContentDialogResult result = await deleteFileDialog.ShowAsync();
// Delete the file if the user clicked the primary button.
/// Otherwise, do nothing.
if (result == ContentDialogResult.Primary) {
// Delete the file.
}
else {
// The user clicked the CLoseButton, pressed ESC, Gamepad B, or the system back button.
// Do nothing.
}
}
What I'm requesting is a C++/winRT version of this snippet.

Answer 1

IAsyncAction Async()
{
ContentDialog dialog;
dialog.Title(box_value(L"title"));
dialog.Content(box_value(L"content"));
dialog.PrimaryButtonText(L"primary");
dialog.CloseButtonText(L"close");
auto result = co_await dialog.ShowAsync();
if (result == ContentDialogResult::Primary)
{
}
}

Answer 2

I wanted to open content dialog on button click so I tried the code snippet provided by Kenny Kerr. Everything seemed to work fine without error but when i clicked the button no dialog was seen. i fixed it by placing below code
dialog.XamlRoot(myButton().XamlRoot());
Before auto result = co_await dialog.ShowAsync() line.

Answer 3

ContentDialog.xaml, xaml.h, xaml.cpp should not have the name or classes
named Windows::UI::Xaml::Controls::ContentDialog!!! My name is
ContentDialog1
DirectXPage.xaml.cpp
void YourNamespace::DirectXPage::UpdateStatus(String^ strMessage,
NotifyType type)
{
switch (type)
{
case NotifyType::StatusMessage:
StatusBorder->Background = ref new
SolidColorBrush(Windows::UI::Colors::Green);
break;
case NotifyType::ErrorMessage:
StatusBorder->Background = ref new
SolidColorBrush(Windows::UI::Colors::Red);
break;
default:
break;
}
StatusBlock->Text = strMessage;
// Collapse the StatusBlock if it has no text to conserve real estate.
if (StatusBlock->Text != "")
{
StatusBorder->Visibility = Windows::UI::Xaml::Visibility::Visible;
StatusPanel->Visibility = Windows::UI::Xaml::Visibility::Visible;
}
else
{
StatusBorder->Visibility = Windows::UI::Xaml::Visibility::Collapsed;
StatusPanel->Visibility = Windows::UI::Xaml::Visibility::Collapsed;
}
// Raise an event if necessary to enable a screen reader to announce
the status update.
auto peer = dynamic_cast<FrameworkElementAutomationPeer^>
(FrameworkElementAutomationPeer::FromElement(StatusBlock));
if (peer != nullptr)
{
peer->RaiseAutomationEvent(AutomationEvents::LiveRegionChanged);
}
}
void YourNameSpace::DirectXPage::NotifyUser(Platform::String^ strMessage,
NotifyType type)
{
if (Dispatcher->HasThreadAccess)
{
UpdateStatus(strMessage, type);
}
else
{
Dispatcher->RunAsync(CoreDispatcherPriority::Normal, ref new
DispatchedHandler([strMessage, type, this]()
{
UpdateStatus(strMessage, type);
ContentDialog1^ dlg = ref new ContentDialog1();
dlg->ContentDialog_SetTitle(L"Error Message");
dlg->ContentDialog_SetTextBlock(L"All textures must be chosen from
the x64\\Release or Debug\\YourNamespace\\AppX\\Assets\\
(Folder or sub-Folders)");
Windows::Foundation::IAsyncOperation<ContentDialogResult>^ result =
dlg->ShowAsync();
if (result->GetResults() == ContentDialogResult::Primary) {}
if (result->GetResults() == ContentDialogResult::Secondary) {}
}));
}
}