Crashes about cimgui.jl HOT 5 CLOSED

Exception handling is tricky between languages. Dear ImGui is written in C++ and cimgui doesn't expose any exception handling utilities and hence we cannot handle this on Julia side. There are at least two feasible ways to solve this problem. One way is to rewrite cimgui following some patterns like hourglass-interfaces. Another way is to directly wrap Dear ImGui based on Cxx which natively supports C++ exceptions. Unfortunately, neither of these is practically feasible because there's too much work that needs to be done.

I guess a great many crashes are caused by missing the EndXXX calls? If so, you could write some macros to automatically insert corresponding EndXXX calls. Other crashes may potentially due to certain bugs, feel free to open specific issues for better tracking.

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Yea that's what I thought, no problem I understand. One thing I don't really get is why I get crashes if I make some dumb mistake on the Julia side of things in between Begin() and End() calls. I guess It's because due to the error exception in Julia the End() call never actually happens. That's a little unfortunate.

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Could you share a minimal working example?

Exceptions on the Julia side should work as long as you setup try-catch block correctly. Here is a simple renderer that I'm currently using for developing and testing imgui tools.

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I've added try-catch-finally-block in those demos(312c0c3).

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I haven't experienced any unexpected crashes since the try-catch-finally-block approach was added last year. Feel free to reopen if any other unexpected crash happens.

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