Added gwinShow() and gwinHide() macro wrappers

docs/releases.txt

@@ -37,7 +37,9 @@ FEATURE:	Added gwinEnable() and gwinDisable()
 FIX:		Progressbar widget bug fix that could gwinProgressbarStop() to crash
 FIX:		Imagebox widget bug fix that could cause gwinImageOpenFile() to crash
 FEATURE:	GWIN containers such as "container" and "frame" which provides parent/children widget management
-FEATURE:	Add gdispContrastColor()
+FEATURE:	Added gdispContrastColor()
+FEATURE:	Added gwinShow() and gwinHide()
+
 
 *** Release 2.0 ***
 FEATURE:	GDISP Streaming API and demos.

src/gwin/sys_defs.h

@@ -341,6 +341,24 @@ extern "C" {
 	 */
 	void gwinSetVisible(GHandle gh, bool_t visible);
 
+	/**
+	 * @brief	Makes a widget become visible
+	 *
+	 * @param[in] gh		The window handle
+	 *
+	 * @api
+	 */
+	#define gwinShow(gh)		gwinSetVisible(gh, TRUE);
+
+	/**
+	 * @brief	Makes a widget become invisible
+	 *
+	 * @param[in] gh		The window handle
+	 *
+	 * @api
+	 */
+	#define gwinHide(gh)		gwinSetVisible(gh, FALSE);
+
 	/**
 	 * @brief	Gets the visibility of a window
 	 * @return	TRUE if visible