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Visual Basic (Microsoft) Versions 5/6 FAQ

What VB shoud be able to do!

A better way to print a form. by Michael42
Posted: 7 Feb 04

'For printCurrentForm
Public Declare Sub keybd_event Lib "user32" (ByVal bVk As Byte, _
    ByVal bScan As Byte, ByVal dwFlags As Long, ByVal dwExtraInfo As Long)
Const VK_MENU As Byte = &H12
Const VK_SNAPSHOT As Byte = &H2C
Const KEYEVENTF_KEYUP = &H2


Public Function printCurrentForm(pForm As Form)
    On Error GoTo ErrorHandler

    Dim lWidth As Long, lHeight As Long
    
    Clipboard.Clear
    Call keybd_event(VK_MENU, 0, 0, 0)
    Call keybd_event(VK_SNAPSHOT, 0, 0, 0)
    DoEvents
    
    Call keybd_event(VK_SNAPSHOT, 0, KEYEVENTF_KEYUP, 0)
    Call keybd_event(VK_MENU, 0, KEYEVENTF_KEYUP, 0)
    
    Printer.Print
    If pForm.Width > Printer.ScaleWidth Then
        lWidth = Printer.ScaleWidth
        lHeight = (Printer.ScaleWidth / pForm.Width) * pForm.Height
    Else
        lWidth = pForm.Width
        lHeight = pForm.Height
    End If
    Printer.PaintPicture Clipboard.GetData, 0, 0, lWidth, lHeight
    Printer.EndDoc
    
    DoEvents
    'Clipboard.Clear
    ' SavePicture Clipboard.GetData, Me.Name & ".BMP"
    
    On Error GoTo 0
    Exit Function


ErrorHandler:
    MsgBox "Error: " & Err.Number & vbCrLf & vbCrLf & Err.Description, vbExclamation, "Error (printCurrentForm)"
        
End Function


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