Unit 'msegui'	Package
[Overview][Constants][Types][Classes][Procedures and functions][Index]	[#msegui]

tguiapplication.waitdialog

Shows a modal message box with the text atext and a Cancel button while a long operation runs, and returns True if the operation finished, False if the user canceled it

Declaration

Source position: msegui.pas line 3342

public function tguiapplication.waitdialog(

const athread: tthreadcomp = Nil;

const atext: msestring = '';

const caption: msestring = '';

const acancelaction: notifyeventty = Nil;

const aexecuteaction: notifyeventty = Nil;

const aidleaction: waitidleeventty = Nil;

const acontinueaction: notifyeventty = Nil

):Boolean;

Description

Shows a modal message box with the text atext and a Cancel button while a long operation runs, and returns True if the operation finished, False if the user canceled it. Must be called from the main thread. The operation can be:

a tthreadcomp passed in athread: it is started, and the dialog closes when it terminates;
aexecuteaction, called once after the dialog is shown;
aidleaction, called repeatedly while the application is idle.

In the last two cases, call terminatewait when the work is done to close the dialog with result True; cancelwait closes it as if the user had canceled. acancelaction is called when Cancel is pressed.