The Application Window (canvas)

View Class: ApplicationWindow
Spec Class: WindowSpec

The Application Window (canvas) represents the top view of the GUI windows generated by the GUI Painter.
While definiting a GUI with the UI Painter, the canvas shows the widgets layout.
It also functions as a drop-target for widgets from the gallery.

The canvases popUp menu provides common layout manipulation and copy/cut/paste functions.
(these functions are also found in the GUIPainters treeView and its main-menu)

Notice, that applications may also be embedded into other applications as subApplications (see SubCanvas).
In this case, the subApplication is defined as if it was a regular topApplication - however, at startup time, it will be created within an instance of SubCanvas (instead of ApplicationWindow)

The Basics Section:

Label	String	The window-label of the topView.
Icon	selector or binding key	Name of the icon message. This message is sent to the application and should return a bitmap image, which is used as the top windows icon.
Menu Bar Selector	selector or binding key	Aspect selector or binding for the building of a menu bar for the application window. It should return a menu spec.
Menu Bar Performer	selector or binding key	Aspect selector or binding for sending the messages of the menu bar items to an object. It should return an object which is able to receive the messages as specified in the menu items. If blank, the application gets the menu messages.
Menu Editor		Opens a Menu Editor on the application class and the defined selector.
Vertical Scroll Bar		Turns on/off that the application window provides vertical scrolling capabilities.
Vertical Mini Scroll Bar		Turns on/off that the application window uses a small vertical scroll bar. This attributes can only be set, if the attribute Vertical Scroll Bar is turned on.
Horizontal Scroll Bar		Turns on/off that the application window provides horizontal scrolling capabilities.
Horizontal Mini Scroll Bar		Turns on/off that the application window uses a small horizontal scroll bar. This attributes can only be set, if the attribute Horizontal Scroll Bar is turned on.
Auto Hide		Controls autoHiding of scrollbars. If on, scrollbars hide themself, if the contents is smaller than the scrolled view. If off, scrollBars never hide themSelf. If set to default, the autoHide feature is controlled by the viewStyle and scrollbars behave "natural" for the operating system. (true for windows, false for most unix-styles).

The Details Section:

Min Width	Integer (pixels)	The minimum allowed width of the application window.
Min Height	Integer (pixels)	The minimum allowed height of the application window.
Pick Min Extent		Picks the current extent of the canvas window and sets it as the minimum extent.
Max Width	Integer (pixels)	The maximum allowed width of the application window.
Max Height	Integer (pixels)	The maximum allowed height of the application window.
Pick Max Extent		Picks the current extent of the canvas window and sets it as the maximum extent.
Use Preferred Extent		Turns on/off that the window application takes its preferred extent from the top component.
BG-Color		Defines the background color of the application window. If the checkToggle is on, the background color can be choosen by selecting the desired color. If no color is selected, the application window takes its default background color (which depends on the viewStyle).
In All Views		If on, the above background color is recursively set in all sub components. If off, it only affects the topWindows background.
Escape is Cancel		Only used with modal dialogs: If on, the ESC-Key will close the dialog as if the cancel-Button was pressed.
Return is OK		Only used with modal dialogs: If on, the Return (Enter-)-Key will close the dialog as if the OK-Button was pressed.

The Layout Section:

see document "The Layout of the Widgets"