IDLitWindow::OnExpose

Syntax | Arguments | Keywords | Version History

The IDLitWindow::OnExpose procedure method handles notification from the window that an expose event has occurred.

Note
By default, the OnExpose method will automatically redraw the graphics hierarchy. If you are using a subclass of IDLitWindow and require additional functionality, you should override this method. Your method will be automatically called when an expose event occurs.

Syntax

Obj->[IDLitWindow::]OnExpose, X, Y, Width, Height

Arguments

X

A floating-point value representing the x-coordinate of the lower left corner of the newly exposed portion of the canvas (in device coordinates).

Y

A floating-point value representing the y-coordinate of the lower left corner of the newly exposed portion of the canvas (in device coordinates).

Width

A floating-point value representing the width of the newly exposed portion of the canvas (in device coordinates).

Height

A floating-point value representing the height of the newly exposed portion of the canvas (in device coordinates).

Keywords

None

Version History