![]() In some of the examples below WordPress has changed my simple double quotes to fancy double quotes. The ViewModelBase code is shared by both examples, and is simply a convenient way of raising INotifyPropert圜hanged. Revisit TRS-80 emulation (sdltrs) Pt 2/2. Note that I've specified in both cases, even though that's the default for those properties, just to be super-clear that that isn't the problem. Pressing a number key from 0to 9jumps to the line in the menu. The Homeand Endkeys moves to the first or last menu item. In both cases, the control remains unchanged visually. Emulator Settings Display Settings Miscellaneous Settings Configuration/State Files Joystick Settings Default Directories ROM FileSelection Main Menu The main menu is the entry point for the Text GUI. Instead of using the X-Window system for graphics, it uses the portable SDL library. It has been ported from Tim Mann's excellent X-Windows UNIX emulator xtrs. (Then update App.cs to set MainPage to the right example.)īoth examples have a very simple situation: a control with two-way binding to a view-model, and a button that updates the view-model property (to simulate "the data has been modified elsewhere" in the real app). sdltrs is a Radio Shack TRS-80 Model I/III/4/4P emulator for Macintosh OSX, Windows, and Linux. Each example is independent of the other - you can try just one. The sample code below can be added directly a "File new project" MAUI app (with a name of "MauiPlayground" to use the same namespaces), or it's all available from my demo code repo. ![]() The sample code is all below, but the fundamental question is whether this a bug somewhere in my code (do I need to "tell" the controls to update themselves for some reason?) or possibly a bug in MAUI (in which case I should presumably report it)? One really good thing about running Manic Miner via X11 is. Label and Checkbox) are visually updated, indicating that the view model notification is working fine and the UI itself is generally healthy.īuild environment: Visual Studio 2022 17.2.0 preview 2.1Īpp environment: Android, either emulator "Pixel 5 - API 30" or a real Pixel 6 The final touch for my retro computing system was an incredible all-round emulator called RetroArch. The problem I'm facing is that changes to the view model are not visually propagated to the Switch.IsToggled and ListView.SelectedItem properties, even though the controls do raise events showing that they've "noticed" the property changes. I'm using 2-way data binding in my MAUI app: changes to the data can either come directly from the user, or from a background polling task that checks whether the canonical data has been changed elsewhere. ( CollectionView has similar issues, but other confounding factors that make it trickier to demonstrate.) It's entirely possible that they're different problems that just share some common symptoms though. This question is about two MAUI controls ( Switch and ListView) - I'm asking about them both in the same question as I'm expecting the root cause of the problem to be the same for both controls.
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