marb2000/desktopwindow

.NET helpers for WinUI3

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I'm a Product Manager (PM) at Google where I work on developer experiences (leading many SDKs for multiple languages and platforms), including generative AI experiences for developers. I love crafting software products, especially those designed for developers. I get a lot of satisfaction from creating frameworks and tools that empower millions of developers to build innovative apps.

Prior to my current role, I was a PM at Microsoft where I worked on Windows OS, APIs, and SDKs. I helped create user experiences for Windows itself and enabled developers to create great apps for it. Some SDKs and tools where I put my energy were Windows Runtime, UWP, Windows App SDK, and WinUI. Additionally, I had the privilege of collaborating with brilliant minds on the Azure, .NET and Visual Studio teams, among others.

I’m from Seville, Spain, a beautiful city that you should visit. I’ve been living in Seattle since 2012. I’ve been fascinated with computers since I was a kid. I’ve always loved books and comics, so by 12, I had developed a digital catalog for my Marvel comic collection in Clipper. When I was around 15, I started developing games using C and ASM. Before I started working as PM, I spent several years as a developer, researcher assistant, developer advocate, and application development manager.

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desktopwindow's Issues

Show window as dialog

Show this window as Dialog like in WPF we use ShowDailog() method.

x86 gives exception.

Exception thrown at 0x76E5A6E2 in DesktopWindowSample.exe: Microsoft C++ exception: EEMessageException at memory location 0x00F7E548.
Exception thrown: 'System.EntryPointNotFoundException' in WindowExtensions.dll
An exception of type 'System.EntryPointNotFoundException' occurred in WindowExtensions.dll but was not handled in user code
Unable to find an entry point named 'SetWindowLongPtr' in DLL 'user32'.

Add Support for Windows App SDK 0.8

It would be great to have this sample upgraded to Windows App SDK 0.8

Getting exception while running the code

System.Reflection.TargetInvocationException
HResult=0x80131604
Message=Exception has been thrown by the target of an invocation.
Source=System.Private.CoreLib
StackTrace:
at System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean wrapExceptions, Boolean& canBeCached, RuntimeMethodHandleInternal& ctor, Boolean& hasNoDefaultCtor)
at System.RuntimeType.CreateInstanceDefaultCtorSlow(Boolean publicOnly, Boolean wrapExceptions, Boolean fillCache)
at System.RuntimeType.CreateInstanceDefaultCtor(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, Boolean wrapExceptions)
at System.Activator.CreateInstanceT
at WinRT.WeakLazy`1.get_Value()
at Microsoft.UI.Xaml.Application._IApplicationStatics.get_Instance()
at Microsoft.UI.Xaml.Application.Start(ApplicationInitializationCallback callback)
at DesktopWindowSample.Program.Main(String[] args) in D:\Temp\DesktopWindow-master\DesktopWindow-master\DesktopWindowSample\DesktopWindowSample\obj\x86\Debug\net5.0-windows10.0.19041.0\App.g.i.cs:line 26

This exception was originally thrown at this call stack:
[External Code]

Inner Exception 1:
COMException: Class not registered (0x80040154 (REGDB_E_CLASSNOTREG))

can't cancel window close

Canceling the window close doesn't work for me.

I'm doing:

this.Closing += MainWin_Closing;
private void MainWin_Closing(object sender, WindowClosingEventArgs e)
{
    if (someCondition())
	e.TryCancel();
}

When I click the X, the WM_CLOSE message is being intercepted by the NewWindowProc in DesktopWindow (at which point IsClosing is still false), so we call OnClosing() which then triggers my MainWin_Closing handler which then calls TryCancel() which sets IsClosing to true, but then we just exit.

What am I doing wrong?