Method SelectAll

KBotExt/imgui/imgui.h:2189–2189

	IMGUI_API void      DeleteChars(int pos, int bytes_count);
	IMGUI_API void      InsertChars(int pos, const char* text, const char* text_end = NULL);
	void                SelectAll() { SelectionStart = 0; SelectionEnd = BufTextLen; }
	void                ClearSelection() { SelectionStart = SelectionEnd = BufTextLen; }
	bool                HasSelection() const { return SelectionStart != SelectionEnd; }
};