CMsgBox: add option to enable/disable button background

replaces var name btn_contour for better plausibility


Origin commit data
------------------
Commit: be740c1552
Author: Thilo Graf <dbt@novatux.de>
Date: 2016-08-18 (Thu, 18 Aug 2016)

src/gui/widget/msgbox.cpp

@@ -7,7 +7,7 @@
 	Günther@tuxbox.berlios.org
 
 	Implementation of CComponent Window class.
-	Copyright (C) 2014-2015 Thilo Graf 'dbt'
+	Copyright (C) 2014-2016 Thilo Graf 'dbt'
 
 	License: GPL
 
@@ -87,6 +87,7 @@ void CMsgBox::init(const int& Height, const int& ShowButtons, const msg_result_t
 
 	//enable footer and add its height
 	showFooter(true);
+	btn_enable_bg = false;
 	ccw_footer->doPaintBg(false);
 	int h_current = height;
 	h_current += ccw_footer->getHeight();
@@ -174,8 +175,8 @@ void CMsgBox::initButtons()
 
 	ccw_footer->setButtonLabels(v_buttons, 0, 125);
 
-	//show buttons with frame and background
-	ccw_footer->showButtonContour(true);
+	//show buttons with background
+	ccw_footer->enableButtonBg(btn_enable_bg);
 
 	//set position of meassage window and refresh window properties
 	setCenterPos();

src/gui/widget/msgbox.h

@@ -112,6 +112,9 @@ class CMsgBox : public CHintBox
 		///assigned button captions
 		std::string BTN_TEXT(const int& showed_button);
 
+		///enables/disable button background
+		bool btn_enable_bg;
+
 		void initButtons();
 	public:
 		/* Constructor */
@@ -181,6 +184,11 @@ class CMsgBox : public CHintBox
 		*/
 		void setButtonText(const int& showed_button, const std::string& text);
 
+		///enables background of buttons, parameter bool show, default= true
+		void enableButtonBg(bool enable = true);
+		///disables background of buttons
+		void disableButtonBg(){enableButtonBg(false);}
+
 // 		bool	setText(const std::string* newText);
 };