Method GetZoom

ImFileDialog.h:48–48

			m_refreshIconPreview();
		}
		inline float GetZoom() { return m_zoom; }

		std::function<void*(uint8_t*, int, int, char)> CreateTexture; // char -> fmt -> { 0 = BGRA, 1 = RGBA }
		std::function<void(void*)> DeleteTexture;