The 'winptr' property

Synonym: hdc

Read-Only, Integer Scalar

Valid for: Window, Document, Dialog. Under Windows, also valid for Check, Radio, Button, Progress, Trackbar, Spinner, Scroll, List, Combo, Edit, RichEdit, Movie, Selector, Page, Treeview, Frame, Grid

The winptr property is used for low-level programming only. Under MacOS, its value is the GrafPtr pointer to window. It can be passed to MacOS calls which require a GrafPtr argument. You can also retrieve the WindowPtr as the handle property.

Under Windows, the winptr property represents the device context (HDC) of the window or control. It can be passed to Windows calls which perform graphics operations.