TGIS_ViewerWnd.BusyPrepare method

Prepare BusyEvent for long-term operation.

Available also on: Delphi FMX | Java | ActiveX | Python.

Syntax

// C#
public void BusyPrepare(
  TObject _sender,
  string _text
);

' VisualBasic
Public Sub BusyPrepare(
  ByVal _sender As TObject,
  ByVal _text As String
)

// Oxygene
public
  procedure BusyPrepare(
    _sender : TObject;
    _text : String
  );

Name	Type	Description
_sender	TObject	component which is causing long-term operations
_text	string String	text to appear in a BusyText property; predefined GIS_BUSY_NOEVENTS and GIS_BUSY_NOHOURGLASS could be used to define "silent" busy state; in such state BusyEvent will not be called and, in a case of GIS_BUSY_NOHOURGLASS, hourglass will not be displayed and check for interrupt as well.

Do not use during OnPaint event directly. Must be paired with BusyRelease. The actual state can be obtained from IsBusy property.