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PictureSizeMode property example

  • Artikkeli

The following example uses the PictureSizeMode property to demonstrate three display options for a picture: showing the picture as is, changing the size of the picture while maintaining its original proportions, and stretching the picture to fill a space.

To use this example, copy this sample code to the Declarations portion of a form. Make sure that the form contains:

Note

This example is an enhanced version of the PictureAlignment property example, as the two properties complement each other. The enhancements are three OptionButton event subroutines that control whether the image is cropped, zoomed, or stretched.

Dim Alignments(5) As String 
 
Private Sub UserForm_Initialize() 
 Alignments(0) = "0 - Top Left" 
 Alignments(1) = "1 - Top Right" 
 Alignments(2) = "2 - Center" 
 Alignments(3) = "3 - Bottom Left" 
 Alignments(4) = "4 - Bottom Right" 
 
 'Specify a bitmap that exists on your system 
 Frame1.Picture = LoadPicture("c:\winnt2\ball.bmp") 
 
 SpinButton1.Min = 0 
 SpinButton1.Max = 4 
 SpinButton1.Value = 0 
 
 TextBox1.Text = Alignments(0) 
 Frame1.PictureAlignment = SpinButton1.Value 
 
 OptionButton1.Caption = "Crop" 
 OptionButton1.Value = True 
 OptionButton2.Caption = "Stretch" 
 OptionButton3.Caption = "Zoom" 
End Sub 
 
Private Sub OptionButton1_Click() 
 If OptionButton1.Value = True Then 
 Frame1.PictureSizeMode = fmPictureSizeModeClip 
 End If 
End Sub 
 
Private Sub OptionButton2_Click() 
 If OptionButton2.Value = True Then 
 Frame1.PictureSizeMode = fmPictureSizeModeStretch 
 End If 
End Sub 
 
Private Sub OptionButton3_Click() 
 If OptionButton3.Value = True Then 
 Frame1.PictureSizeMode = fmPictureSizeModeZoom 
 End If 
End Sub 
 
Private Sub SpinButton1_Change() 
 TextBox1.Text = Alignments(SpinButton1.Value) 
 Frame1.PictureAlignment = SpinButton1.Value 
End Sub 
 
Private Sub TextBox1_Change() 
 Select Case TextBox1.Text 
 Case "0" 
 TextBox1.Text = Alignments(0) 
 Frame1.PictureAlignment = 0 
 Case "1" 
 TextBox1.Text = Alignments(1) 
 Frame1.PictureAlignment = 1 
 Case "2" 
 TextBox1.Text = Alignments(2) 
 Frame1.PictureAlignment = 2 
 Case "3" 
 TextBox1.Text = Alignments(3) 
 Frame1.PictureAlignment = 3 
 Case "4" 
 TextBox1.Text = Alignments(4) 
 Frame1.PictureAlignment = 4 
 Case Else 
 TextBox1.Text = Alignments(SpinButton1.Value) 
 Frame1.PictureAlignment = SpinButton1.Value 
 End Select 
End Sub

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