Unsupported events for controls in Web Forms

Table 8-8 lists unsupported events, the controls on which they are not supported, and any notes that apply to specific controls. If your application uses these events, rework it to avoid their use.

Custom events Custom events based on PowerBuilder Message (pbm) event IDs are not supported in Web Forms applications. However, you can call user-defined events without event IDs using the TriggerEvent and PostEvent functions.

**Table 8-8: Unsupported events by control in Web Forms projects**
Event	Controls
BeginDrag	All controls
BeginLabelEdit	ListView, TreeView
BeginRightDrag	All controls
Clicked	DatePicker, MonthCalendar (supported for DataWindow, but not triggered on editable controls that already have focus)
CloseUp	DatePicker
Deactivate	Window
DeleteAllItems	ListView
DoubleClicked	DatePicker, DropDownListBox, DropDownPictureListBox, HProgressBar, MonthCalendar, RichTextEdit, Tab, VProgressBar, Window (supported for other controls, but the Clicked event is not triggered on a double-click in a Picture or StaticText control)
DragDrop	All controls
DragEnter	All controls
DragLeave	All controls
DragWithin	All controls
DropDown	DatePicker
EditChanged	DataWindow
EndLabelEdit	ListView, TreeView
FileExists	RichTextEdit
GetFocus	All controls
Help	All controls
Hide	Window
HotLinkAlarm	Window
InputFieldSelected	RichTextEdit
ItemActivate	ListView
ItemChanged	DataStore
Key	All controls
LoseFocus	All controls
MouseDown	RichTextEdit, Window
MouseMove	RichTextEdit, Window
MouseUp	RichTextEdit, Window
Notify	TreeView
Other	All controls
PrintEnd	DataWindow
PrintMarginChange	DataWindow
PrintPage	DataWindow
PrintStart	DataWindow
RButtonDown	MultiLineEdit, SingleLineEdit, HScrollBar, VScrollBar
RButtonUp	RichTextEdit
RemoteExec	Window
RemoteHotLinkStart	Window
RemoteHotLinkStop	Window
RemoteRequest	Window
RemoteSend	Window
RightClicked	ListView
RightDoubleClicked	All controls
ScrollHorizontal	DataWindow
ScrollVertical	DataWindow
Selected	Menu
Sort	ListView, TreeView
SystemKey	Window
ToolbarMoved	Window
ValueChanged	DatePicker

Table 8-8: Unsupported events by control in Web Forms projects

Event

Controls

BeginDrag

All controls

BeginLabelEdit

ListView, TreeView

BeginRightDrag

All controls

Clicked

DatePicker, MonthCalendar (supported for DataWindow, but not triggered on editable controls that already have focus)

CloseUp

DatePicker

Deactivate

Window

DeleteAllItems

ListView

DoubleClicked

DatePicker, DropDownListBox, DropDownPictureListBox, HProgressBar, MonthCalendar, RichTextEdit, Tab, VProgressBar, Window (supported for other controls, but the Clicked event is not triggered on a double-click in a Picture or StaticText control)

DragDrop

All controls

DragEnter

All controls

DragLeave

All controls

DragWithin

All controls

DropDown

DatePicker

EditChanged

DataWindow

EndLabelEdit

ListView, TreeView

FileExists

RichTextEdit

GetFocus

All controls

Help

All controls

Hide

Window

HotLinkAlarm

Window

InputFieldSelected

RichTextEdit

ItemActivate

ListView

ItemChanged

DataStore

Key

All controls

LoseFocus

All controls

MouseDown

RichTextEdit, Window

MouseMove

RichTextEdit, Window

MouseUp

RichTextEdit, Window

Notify

TreeView

Other

All controls

PrintEnd

DataWindow

PrintMarginChange

DataWindow

PrintPage

DataWindow

PrintStart

DataWindow

RButtonDown

MultiLineEdit, SingleLineEdit, HScrollBar, VScrollBar

RButtonUp

RichTextEdit

RemoteExec

Window

RemoteHotLinkStart

Window

RemoteHotLinkStop

Window

RemoteRequest

Window

RemoteSend

Window

RightClicked

ListView

RightDoubleClicked

All controls

ScrollHorizontal

DataWindow

ScrollVertical

DataWindow

Selected

Sort

ListView, TreeView

SystemKey

Window

ToolbarMoved

Window

ValueChanged

DatePicker

Partially supported control events

Clicked event In a Web Forms application, if an editable DataWindow text column does not have focus, clicking it sets the focus on the column and triggers the Clicked event. If the column already has focus, clicking it does not trigger the Clicked event. This intended behavior reduces postbacks.

Selected event The Selected event on a menu is not generally supported in Web Forms applications. However, if you set the AutoTriggerMenuSelectedEvents global property to true, the Selected event is supported for simple tasks that can be run prior to the rendering of Web Forms in a client browser.