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Add to SafariWhen comparing wxWidgets vs Flutter, the Slant community recommends wxWidgets for most people. In the question“What are the best cross-platform GUI toolkits?” wxWidgets is ranked 1st while Flutter is ranked 15th. The most important reason people chose wxWidgets is:
wxWidgets was started in 1992 by Julian Smart.
Specs
Question Ranking
Pros
Pro Mature
wxWidgets was started in 1992 by Julian Smart.
Pro Truly native look and feel
It uses the platform's native API rather than emulating the GUI.
Pro Open source
wxWidgets can be used for free or commercial projects, at no cost.
Pro Can do custom control rendering
You can make a custom renderer using the class wxDelegateRendererNative to draw directly any standard control or using the class BackgroundWindow to use any bitmap as a control background.
Pro Forms designers
Several forms designers, like wxFormBuilder, are available.
Pro Designer
A very nice designer: wxCrafter. Free for non-commercial use/evaluation phase (without time expiration). Highly recommended if you plan to use wxWidgets.
Pro Perfect combination: wxFormBuilder + ZeroBrane (wxLua)
Lua Language can provide extra high level scripting
Pro Can use Qt on X11
WxQt is available on X11.
Pro Open source
Pro Great developer tools debug/hotreload/analyser
Pro Based on Dart language
Dart is a Java like language, easy to learn and startup fast for millions of Java developers.
Pro A single codebase for iOS AND Android
Pro Fast
The developer's goal is to allow people to make apps running at 120 FPS.
Cons
Con Android port not totally usable yet
See WxAndroid.
Con Uses GTK on X11
WxWidgets uses GTK+ on X11 desktop which well known for looking like an alien on non GTK+ desktops.
Con Has slightly heavy compiled result
Con Written in C++
Con Still in development
According to the website, Flutter is still in its early stages of development.
Con Based on Dart language
Dart is a Java like language, easy to learn and startup fast for millions of Java developers. BUT if you have to learn it ... it's a con.
Con Dart is unpopular and never gained serious community traction like Kotlin or Java
Con Does not support 32-bit iOS devices
If you plan on targeting iPhone 5, 5C or earlier, you can forget about Flutter.
Con Google has a bad history with product loyalty
