Method GetCustomRectByIndex

KBotExt/imgui/imgui.h:2926–2926

	IMGUI_API int               AddCustomRectRegular(int width, int height);
	IMGUI_API int               AddCustomRectFontGlyph(ImFont* font, ImWchar id, int width, int height, float advance_x, const ImVec2& offset = ImVec2(0, 0));
	ImFontAtlasCustomRect* GetCustomRectByIndex(int index) { IM_ASSERT(index >= 0); return &CustomRects[index]; }

	// [Internal]
	IMGUI_API void              CalcCustomRectUV(const ImFontAtlasCustomRect* rect, ImVec2* out_uv_min, ImVec2* out_uv_max) const;