KeyboardEvent.KeyAscii property (Visio)

Artikkeli
01/19/2022

Returns the ASCII code associated with a KeyPress event. Read-only.

Syntax

expression. KeyAscii

expression A variable that represents a KeyboardEvent object.

Return value

Long

Remarks

The values returned by KeyAscii are ASCII codes. To see a list of these codes, search for "ASCII character codes" on MSDN, the Microsoft Developer Network.

Example

This class module shows how to define a sink class called KeyboardListener that listens for events fired by keyboard actions in the active window. It declares the object variable vsoWindow by using the WithEvents keyword. The class module also contains event handlers for the KeyDown, KeyPress, and KeyUp events.

To run this example, insert a new class module in your Microsoft Visual Basic for Applications (VBA) project, name it KeyboardListener, and insert the following code in the module.

Dim WithEvents vsoWindow As Visio.Window 
 
Private Sub Class_Initialize() 
 
 Set vsoWindow = ActiveWindow 
 
End Sub 
 
Private Sub Class_Terminate() 
 
 Set vsoWindow = Nothing 
 
End Sub 
 
 
Private Sub vsoWindow_KeyDown(ByVal KeyCode As Long, ByVal KeyButtonState As Long, CancelDefault As Boolean) 
 
 Debug.Print "KeyCode is "; KeyCode 
 Debug.Print "KeyButtonState is" ; KeyButtonState 
 
End Sub 
 
Private Sub vsoWindow_KeyPress(ByVal KeyAscii As Long, CancelDefault As Boolean) 
 
 Debug.Print "KeyAscii value is "; KeyAscii 
 
End Sub 
 
Private Sub vsoWindow_KeyUp(ByVal KeyCode As Long, ByVal KeyButtonState As Long, CancelDefault As Boolean) 
 
 Debug.Print "KeyCode is "; KeyCode 
 Debug.Print "KeyButtonState is" ; KeyButtonState 
 
End Sub

Then, insert the following code in the ThisDocument project.

Dim myKeyboardListener As KeyboardListener 
 
Private Sub Document_DocumentSaved(ByVal doc As IVDocument) 
 
 Set myKeyboardListener = New KeyboardListener 
 
End Sub 
 
Private Sub Document_BeforeDocumentClose(ByVal doc As IVDocument) 
 
 Set myKeyboardListener = Nothing 
 
End Sub

Save the document to initialize the class, and then press any key to fire a KeyPress event. In the Immediate window, the handler prints the ASCII code of the key that was pressed to fire the event.

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