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utils/vgui_panel_zoo/MessageBoxDemo.cpp

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//=============================================================================//
+#include "DemoPage.h"
+
+#include <VGUI/IVGui.h>
+#include <vgui_controls/Controls.h>
+
+#include <Keyvalues.h>
+#include <vgui_controls/Button.h>
+#include <vgui_controls/MessageBox.h>
+
+
+using namespace vgui;
+
+// Message boxes are windows that pop up in response to events.
+// They are particularly useful for error messages.
+// In this example we will trigger the opening of a message box when
+// a button is pressed.
+
+class MessageBoxDemo: public DemoPage
+{
+	public:
+		MessageBoxDemo(Panel *parent, const char *name);
+		~MessageBoxDemo();
+
+		void OnButtonClicked();
+		void ShowMessageBox();
+	private:
+		Button *m_pButton;
+
+		DECLARE_PANELMAP();
+};
+
+//-----------------------------------------------------------------------------
+// Purpose: Constructor
+//-----------------------------------------------------------------------------
+MessageBoxDemo::MessageBoxDemo(Panel *parent, const char *name) : DemoPage(parent, name)
+{
+	// Create a button to trigger the message box.
+	m_pButton = new Button(this, "AButton", "Click Me For A Message");
+
+	// Size the button to its text.
+	int wide, tall;
+	m_pButton->GetContentSize(wide, tall);
+	m_pButton->SetSize(wide + Label::Content, tall + Label::Content);
+
+	// Set its position.
+	m_pButton->SetPos(100, 100);
+
+	// Install a command that will be executed when the button is pressed
+	// Here we use a KeyValues command, this is mapped using the Message map
+	// below to a function.
+	m_pButton->SetCommand(new KeyValues ("ButtonClicked"));
+
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Destructor
+//-----------------------------------------------------------------------------
+MessageBoxDemo::~MessageBoxDemo()
+{
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose:	 Respond to a message based action signal
+//  
+//-----------------------------------------------------------------------------
+void MessageBoxDemo::OnButtonClicked()
+{
+	ivgui()->DPrintf("Button was clicked.\n");
+
+	// When the button is clicked we open the message box in response.
+	ShowMessageBox();
+}
+
+//-----------------------------------------------------------------------------
+// Purpose:	Display a message box
+//-----------------------------------------------------------------------------
+
+void MessageBoxDemo::ShowMessageBox()
+{
+   	// create a new message box.
+	// The first arg is the name of the window and will be across the top.
+	// The second arg is the text that will appear in the message box.
+	// The third arg is if the box starts minimized (yes since we want the button to open it)
+	// The fourth arg is a parent window arg.
+	MessageBox *pMessage = new MessageBox ("Message Window", "Here is some message box text\n You must click OK to continue.", NULL);
+
+
+	// This command will pop up the message box and hold it there until we click
+	// the OK button. When the OK button is clicked the message box object is destroyed.
+	pMessage->DoModal();
+}
+
+
+
+
+
+MessageMapItem_t MessageBoxDemo::m_MessageMap[] =
+{
+	MAP_MESSAGE( MessageBoxDemo, "ButtonClicked", OnButtonClicked ), 
+};
+
+IMPLEMENT_PANELMAP(MessageBoxDemo, DemoPage);
+
+
+
+Panel* MessageBoxDemo_Create(Panel *parent)
+{
+	return new MessageBoxDemo(parent, "MessageBoxDemo");
+}
+
+