expression.Mask
expression Required. An expression that returns a CommandBarButton object.
Remarks
When you create an image that you plan on using as a mask image, all of the areas that you want to be transparent should be white, and all of the areas that you want to show should be black.
Always set the mask after you have set the picture for a CommandBarButton object.
Example
The following example sets the image and mask of the first CommandBarButton that the code returns. To make this work, create a mask image and a button image and sustitute the paths in the sample with the paths to your images.
Sub ChangeButtonImage()
Dim picPicture As IPictureDisp
Dim picMask As IPictureDisp
Set picPicture = stdole.StdFunctions.LoadPicture( _
"c:\images\picture.bmp")
Set picMask = stdole.StdFunctions.LoadPicture( _
"c:\images\mask.bmp")
'Reference the first button on the first command bar
'using a With...End With block.
With Application.CommandBars.FindControl(msoControlButton)
'Change the button image.
.Picture = picPicture
'Use the second image to define the area of the
'button that should be transparent.
.Mask = picMask
End With
End Sub
The following example gets the image and mask of the first CommandBarButton that the code returns and outputs each of them to a file. To make this work, specify a path for the output files.
Sub GetButtonImageAndMask()
Dim picPicture As IPictureDisp
Dim picMask As IPictureDisp
With Application.CommandBars.FindControl(msoControlButton)
'Get the button image and mask of this CommandBarButton object
Set picPicture = .Picture
Set picMask = .Mask
End With
'Save the button image and mask in a folder.
stdole.SavePicture picPicture, "c:\image.bmp"
stdole.SavePicture picMask, "c:\mask.bmp"
End Sub