Window types

There are multiple window types in the Screen API. Each window type has a different use and different positioning rules, and each window is typically used to display different types of content. You specify the window type at window creation time. The following types are available.

SCREEN_APPLICATION_WINDOW
The window type that's used to display the main application. The X and Y coordinates are always relative to the dimensions of the display.

Application windows can be used to display an application in fullscreen mode:

An image showing an application window that is displaying an application in fullscreen mode.

SCREEN_CHILD_WINDOW
The subwindow type that's commonly used to display a dialog. You must add a child window to an application's window group; otherwise, the child window is invisible. A child window's display properties are relative to the application window to which it belongs. For example, the X and Y coordinates of the child window are all relative to the top-left corner of the application window.

Child windows can be used to display minimized applications:

An image showing a child window that is displaying minimized applications.

SCREEN_EMBEDDED_WINDOW
Used to embed a window control within an object. Like the child window, the X and Y coordinates of the embedded window are all relative to the top-left corner of the application window. You must add an embedded window to an application's window group, otherwise the embedded window is invisible.
SCREEN_ROOT_WINDOW
This window type is not available. Any attempt to use it will result in error.

Last modified: 2015-03-31



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