api:dk11:delphi:fmx.gisviewerwnd.tgis_viewerwnd.beforepaintevent
Table of Contents
TGIS_ViewerWnd.BeforePaintEvent event
DK11 for Delphi | FMX.GisViewerWnd.TGIS_ViewerWnd.BeforePaintEvent | Constructors | Methods | Properties | Events
BeforePaint event. Will be fired before any Paint operation. Uses painting context object.
Available also on: .NET WinForms | ActiveX | Python.
Syntax
// Delphi published property BeforePaintEvent : TGIS_PaintEvent read write;
// C++ Builder published: __property TGIS_PaintEvent* BeforePaintEvent = {read, write};
Value
| Type |
|---|
| TGIS_PaintEvent |
Remarks
This even can be quite costly. To maintain compatibility with the old code we guarantee proper Canvas drawing context. Try to replace this event with BeforePaintRendererEvent, which is always fast.
References
2022/11/16 01:14