How to set the clipboard functions to default ImGui implementation? about imgui

[PathogenDavid]

The easiest route would be to save and restore the clipboard functions before/after the backend initialization. IE:

auto defaultSetClipboardTextFn = io.SetClipboardTextFn;
auto defaultGetClipboardTextFn = io.GetClipboardTextFn;
auto defaultClipboardUserData = io.ClipboardUserData;
ImGui_ImplSDL2_InitForOpenGL(window, gl_context);
io.SetClipboardTextFn = defaultSetClipboardTextFn;
io.GetClipboardTextFn = defaultGetClipboardTextFn;
io.ClipboardUserData = defaultClipboardUserData;

[paul-akl]

The easiest route would be to save and restore the clipboard functions before/after the backend initialization. IE:

auto defaultSetClipboardTextFn = io.SetClipboardTextFn;
auto defaultGetClipboardTextFn = io.GetClipboardTextFn;
ImGui_ImplSDL2_InitForOpenGL(window, gl_context);
io.SetClipboardTextFn = defaultSetClipboardTextFn;
io.GetClipboardTextFn = defaultGetClipboardTextFn;

That is actually a clever solution, how didn't I think of that. Thank you!

I'll keep the issue open for a bit, in case someone comments with a direct way to get the default clipboard implementation.

EDIT:
For this solution to work correctly, one needs to set the ClipboardUserData as well, since it is set to nullptr in the SDL2 implementation, thus ImGui throws an exception when reading the clipboard by trying to clear the nullptr.

Amended solution that works for me:

auto defaultSetClipboardTextFn = io.SetClipboardTextFn;
auto defaultGetClipboardTextFn = io.GetClipboardTextFn;
auto defaultClipboardUserData = io.ClipboardUserData;

ImGui_ImplSDL2_InitForOpenGL(window, gl_context);

io.SetClipboardTextFn = defaultSetClipboardTextFn;
io.GetClipboardTextFn = defaultGetClipboardTextFn;
io.ClipboardUserData = defaultClipboardUserData;

[PathogenDavid]

ClipboardUserData

Oops yeah, that's my bad. Sorry about that! 😅

[ocornut]

Also make sure that what you perceive as hanging isn’t some kind of symbol loading performed by the debugger (in which case you may set it up to lazily load symbols on crash only).

[paul-akl]

Also make sure that what you perceive as hanging isn’t some kind of symbol loading performed by the debugger (in which case you may set it up to lazily load symbols on crash only).

Thanks for your input, ocornut!

It wasn't a debuggers fault, as the same hanging is happening when manually running the binary compiled in release mode. In addition, the freezing happens every time the clipboard is accessed, not just the first time after running the program.

Assuming there is no intended way to explicitly access the default clipboard implementation and there is a work-around that I'm happy with, I'll close the issue as resolved 👍