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ImDrawList: made AddCallback() user data default to NULL + minor amends/comments.

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ocornut
2026-04-23 15:58:44 +02:00
parent 4739af2d51
commit ac06ad7b48
9 changed files with 15 additions and 12 deletions
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imgui.h
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@@ -3385,7 +3385,7 @@ struct ImDrawList
// - If userdata_size == 0: we copy/store the 'userdata' argument as-is. It will be available unmodified in ImDrawCmd::UserCallbackData during render.
// - If userdata_size > 0, we copy/store 'userdata_size' bytes pointed to by 'userdata'. We store them in a buffer stored inside the drawlist. ImDrawCmd::UserCallbackData will point inside that buffer so you have to retrieve data from there. Your callback may need to use ImDrawCmd::UserCallbackDataSize if you expect dynamically-sized data.
// - Support for userdata_size > 0 was added in v1.91.4, October 2024. So earlier code always only allowed to copy/store a simple void*.
IMGUI_API void AddCallback(ImDrawCallback callback, void* userdata, size_t userdata_size = 0);
IMGUI_API void AddCallback(ImDrawCallback callback, void* userdata = NULL, size_t userdata_size = 0);
// Advanced: Miscellaneous
IMGUI_API void AddDrawCmd(); // This is useful if you need to forcefully create a new draw call (to allow for dependent rendering / blending). Otherwise primitives are merged into the same draw-call as much as possible