Whitelist certain internal functions

[ptxmac]

Some of the functions in imgui_internal can be useful, and sometimes the only way to archive a certain feature.

My use-case is a window that doesn't respond to hit test for a section where I'm displaying a texture. This will forward the mouse / keyboard events to the rest of my app instead.

[ptxmac]

The SetWindowHitTestHole function is mentioned in ocornut/imgui#3368 and work on creating a non-internal approach was discussed but abandoned in ocornut/imgui#1512

[gucio321]

@ptxmac maybe it is possible to do this on cimgui level?
I mean if cimgui can generate json output with imgui_internal functions as ewll, imo it'd be better to do it there.

[ptxmac]

@gucio321 the functions are already in definitions.json, but the codegen ignores all functions coming from "imgui_internal".
I crated this whitelist to selectively include a few of them again (including all of them results in compile errors)

[gucio321]

interessting... Why exactly did we exclude them? Maybe we'd rather focus on fixing this compilation issue? @AllenDang?

[AllenDang]

@gucio321 I'd rather focus on fixing the compilation issue...

[ptxmac]

A quick snapshot of some of the errors if we generate all internal functions:

$ go run examples/main.go
# github.com/AllenDang/cimgui-go
./cimgui_funcs.go:3785:6: ItemFlags redeclared in this block
	./cimgui_enums.go:540:6: other declaration of ItemFlags
./cimgui_funcs.go:3826:6: ItemStatusFlags redeclared in this block
	./cimgui_enums.go:557:6: other declaration of ItemStatusFlags
./cimgui_structs.go:514:6: InputTextState redeclared in this block
	./cimgui_funcs.go:3781:6: other declaration of InputTextState
./cimgui_structs.go:528:6: KeyData redeclared in this block
	./cimgui_funcs.go:3830:6: other declaration of KeyData
./cimgui_structs.go:542:6: KeyOwnerData redeclared in this block
	./cimgui_funcs.go:3857:6: other declaration of KeyOwnerData
./cimgui_funcs.go:3781:28: InputTextState (value of type func()) is not a type
./cimgui_funcs.go:3782:26: cannot use unsafe.Pointer((C.igGetInputTextState)(C.ImGuiID(id))) (value of type unsafe.Pointer) as ID value in argument to (InputTextState)
./cimgui_funcs.go:3857:28: KeyOwnerData (value of type func()) is not a type
./cimgui_funcs.go:3830:23: KeyData (value of type func()) is not a type
./cimgui_funcs.go:1024:26: cannot use unsafe.Pointer(func() *C.struct_ImGuiInputTextState {…}()) (value of type unsafe.Pointer) as ID value in argument to (InputTextState)
./cimgui_funcs.go:1024:26: too many errors

[gucio321]

well, in my opinion we may rename thing coming from imgui-internal to "InternalXYZ". This way we will not have duplicates and everyone will know what is going on.

[ptxmac]

Superseded by #119