Rename / deactivate imgui.ini

[shihan42]

Expected Behavior

It should be possible to rename the file imgui.ini or deactivate it completely. Native ImGui supports changing the global IniFilename.

Current Behavior

Name can't be changed / generation can't be deactivated, since IniFilename only has a getter, no setter.

Possible Solution

1. Enable ImGui.GetIO().IniFilename = null; or ImGui.GetIO().IniFilename = "my_config.ini"; or
2. Expose it through another way

[bootzin]

I believe you can set it as ImGui.GetIO().NativePtr->IniFilename = "my_config.ini" Haven't tested it though

[shihan42]

Thank you for the suggestion. It works with both renaming and deactivating, but only inside an unsafe context. It is ok, but could be better.

[Moe2912]

I just had the same problem as I'm coding with VB.NET which does not support unsafe context. I solved it with the following work around:

        Dim IO = ImGuiNET.ImGui.GetIO()
        Dim nativePtr = IO.GetType().GetProperty("NativePtr").GetValue(IO)
        Dim getPointerValue = nativePtr.GetType().GetMethod("GetPointerValue", Reflection.BindingFlags.NonPublic Or Reflection.BindingFlags.Instance)
        Dim ptr = CType(getPointerValue.Invoke(nativePtr, Nothing), IntPtr)
        Dim offset = Runtime.InteropServices.Marshal.OffsetOf(GetType(ImGuiNET.ImGuiIO), "IniFilename")

        Runtime.InteropServices.Marshal.WriteIntPtr(ptr + offset.ToInt32(), IntPtr.Zero)