Action Event

Occurs When The User Clicks On The Control

Syntax:

Action <ActionProcedure>

OnChange Event

Occurs When The Content Of a Control Changes

Syntax:

OnChange <ActionProcedure>

OnClick Event

Occurs when the user clicks on the control

Syntax:

OnCLick <ActionProcedure>

OnCloseUp Event

Occurs when the user closes the dropdown list of a ComboBox control

Syntax:

OnCloseUp <ActionProcedure>

OnDblClick Event

Occurs when the user double clicks on the control

Syntax:

OnDblClick <ActionProcedure>

The following data are available at ‘OnDblClick’ procedure:

  • This.CellRowIndex

  • This.CellColIndex

  • This.CellRow

  • This.CellCol

  • This.CellWidth

  • This.CellHeight

  • Note: These properties are not available when OnDblClick procedure is fired by <Enter> key pressing.

OnDisplayChange Event

Occurs when the data in an editable ComboBox control is changed

Syntax:

OnDisplayChange <ActionProcedure>

OnDropDown Event

Occurs when the user open the dropdown list of a ComboBox control

Syntax:

OnDropDown <ActionProcedure>

OnEnter Event

Occurs when the user press the <Enter> key in a control with the input focus

Syntax:

OnEnter <ActionProcedure>

OnGotFocus Event

Occurs when a control or window gains the input focus

Syntax:

OnGotFocus <ActionProcedure>

OnHeadClick Event

Occurs when a Grid or Browse header is clicked

Syntax:

OnHeadClick <ActionProcedure>

OnHScrollBox Event

Occurs when the horizontal scrollbar button of a virtual dimensioned window is dragged

Syntax:

OnHScrollBox <ActionProcedure>

Position of scrollbars in a virtual dimensioned window can be retrieved via the ‘value’ property of ‘HscrollBar’ and ‘VscrollBar’ pseudo-controls:

WindowName.HscrollBar.value
WindowName.VscrollBar.value

OnInit Event

Occurs when a Window is initialized

Syntax:

OnInit <ActionProcedure>

OnInteractiveClose Event

Occurs when a Window is about to be closed by pressing the [X] button

Syntax:

OnInteractiveClose <ActionProcedure>

If the ‘InteractiveClose’ procedure returns .T., the window will be closed normally, otherwise it will not be closed.

OnKey

Occurs when the user press any key in Grids control with the input focus

Syntax:

OnKey <ActionProcedure>

You can also make use in your procedure function following HMG functions:

HMG_GetLastVirtualKeyDown() and HMG_CleanLastVirtualKeyDown()

Notes:

· Keyboard functions can be found in Advanced\/Read Keyboard and Mouse

· Keys values are defined in \hmg...\INCLUDE\i_keybd.ch file, same like as for HotKey definitions.

· ON KEY is used as a Grid property at Standard syntax (xBase style: @... Grid) and please do not confuse ON KEY for Keyboard Shortcuts (HotKeys) definition.

OnLostFocus Event

Occurs when a control or window had lost the input focus

Syntax:

OnLostFocus <ActionProcedure>

OnMaximize Event

Occurs when a Window is maximized

Syntax:

OnMaximize <ActionProcedure>

OnMinimize Event

Occurs when a Window is minimized

Syntax:

OnMinimize <ActionProcedure>

OnMouseClick Event

Occurs when the user click a Window

Syntax:

OnMouseClick <ActionProcedure>

The following data are available at ‘OnMouseClick’ procedure:

_HMG_SYSDATA [ 191 ] -> Mouse Row

_HMG_SYSDATA [ 192 ] -> Mouse Col

OnMouseDrag Event

Occurs when the user drag in a Window

Syntax:

OnMouseDrag <ActionProcedure>

The following data are available at ‘OnMouseClick’ procedure:

_HMG_SYSDATA [ 191 ] -> Mouse Row
_HMG_SYSDATA [ 192 ] -> Mouse Col

OnMouseMove Event

Occurs when the user moves the mouse over a Window

Syntax:

OnMouseMove <ActionProcedure>

The following data are available at ‘OnMouseClick’ procedure:

_HMG_SYSDATA [ 191 ] -> Mouse Row
_HMG_SYSDATA [ 192 ] -> Mouse Col

OnNotifyClick Event

Occurs when a notify icon is clicked

Syntax:

OnNotifyClick <ActionProcedure>

OnQueryData Event

Occurs when a virtual Grid control requires data to display a cell

Syntax:

OnQueryData <ActionProcedure>

The following data are available at ‘OnQueryData’ procedure:

  • This.QueryData

  • This.QueryRowIndex

  • This.QueryColIndex

OnPaint Event

Occurs when a Window is painted by the system

Syntax:

OnPaint <ActionProcedure>

OnRelease Event

Occurs when a Window is released

Syntax:

OnRelease <ActionProcedure>

OnSave Event

Occurs when a data-bound Grid control is saved

Syntax:

OnSave <ActionProcedure>

Properties Available For OnSave Procedure:

  • This.AppendBuffer

  • This.EditBuffer

  • This.MarkBuffer

  • This.EditBuffer: Array of one element per edited cell. The elements has the following structure: { nLogicalRow , nLogicalCol , xValue , nRecNo }

  • This.AppendBuffer: Array of one element per appended record. The elements has the following structure: { xFieldValue 1 , ... , xFieldValue n }

  • This.MarkBuffer: Array of one element per record marked to be deleted or recalled. The elements has the following structure: { nLogicalRow , nRecNo , cMark ( 'D' or 'R' ) }

Note: When an action procedure is specified for this eventt, the default one is not executed.

OnScrollDown Event

Occurs when a virtual dimensioned window is scrolled down

Syntax:

OnScrollDown <ActionProcedure>

Position of scrollbars in a virtual dimensioned window can be retrieved via the ‘value’ property of ‘HscrollBar’ and ‘VscrollBar’ pseudo-controls:

WindowName.HscrollBar.value
WindowName.VscrollBar.value

OnScrollLeft Event

Occurs when a virtual dimensioned window is scrolled left

Syntax:

OnScrollLeft <ActionProcedure>

Position of scrollbars in a virtual dimensioned window can be retrieved via the ‘value’ property of ‘HscrollBar’ and ‘VscrollBar’ pseudo-controls:

WindowName.HscrollBar.value
WindowName.VscrollBar.value

OnScrollRIght Event

Occurs when a virtual dimensioned window is scrolled right

Syntax:

OnScrollRight <ActionProcedure>

Position of scrollbars in a virtual dimensioned window can be retrieved via the ‘value’ property of ‘HscrollBar’ and ‘VscrollBar’ pseudo-controls:

WindowName.HscrollBar.value

WindowName.VscrollBar.value

OnScrollUp Event

Occurs when a virtual dimensioned window is scrolled up

Syntax:

OnScrollUp <ActionProcedure>

Position of scrollbars in a virtual dimensioned window can be retrieved via the ‘value’ property of ‘HscrollBar’ and ‘VscrollBar’ pseudo-controls:

WindowName.HscrollBar.value
WindowName.VscrollBar.value

OnSize Event

Occurs when a Window is sized

Syntax:

OnSize <ActionProcedure>

OnVScrollBox Event

Occurs when the vertical scrollbar button of a virtual dimensioned window is dragged

Syntax:

OnVScrollBox <ActionProcedure>

Position of scrollbars in a virtual dimensioned window can be retrieved via the ‘value’ property of ‘HscrollBar’ and ‘VscrollBar’ pseudo-controls:

WindowName.HscrollBar.value
WindowName.VscrollBar.value

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