Transparent Picturebox / Image with a handle...

[rjlohan]

I want to display a picture over all my other controls, but with a transparent background.

The PictureBox doesn't have a bloody transparency, and the Image control won't show in front of certain controls...


Point me in the right direction someone...

[BuggyProgrammer]

how about transparent bitblt? will that work?

[rjlohan]

Potentially. Show me how, and I'll let you know...

[BuggyProgrammer]

this is apiguide example:

'This project needs 2 pictureboxes
'Picturebox1 must contain a picture with a lot of white pixels (we're going to use white as transparent color)
Private Declare Function TransparentBlt Lib "msimg32.dll" (ByVal hdc As Long, ByVal x As Long, ByVal y As Long, ByVal nWidth As Long, ByVal nHeight As Long, ByVal hSrcDC As Long, ByVal xSrc As Long, ByVal ySrc As Long, ByVal nSrcWidth As Long, ByVal nSrcHeight As Long, ByVal crTransparent As Long) As Boolean
Private Sub Form_Load()
    'KPD-Team 1999
    'URL: [url]http://www.allapi.net/[/url]
    'E-Mail: [email][email protected][/email]
    Picture1.AutoSize = True
    'API uses pixels
    Picture1.ScaleMode = vbPixels
    Picture2.ScaleMode = vbPixels
End Sub
Private Sub Picture2_Paint()
    'If we don't call DoEvents first, our transparent image will be completely wrong
    DoEvents
    TransparentBlt Picture2.hdc, 0, 0, Picture2.ScaleWidth, Picture2.ScaleHeight, Picture1.hdc, 0, 0, Picture1.ScaleWidth, Picture1.ScaleHeight, vbWhite
End Sub

Requires Windows 2000 or later; Requires Windows 98 or later

[rjlohan]

Apparently I don't have msimg32.dll on this machine (NT4 workstation).

Any other ideas?

[BuggyProgrammer]

well... i don't know how to do this, but you could use bitblt with a mask. maybe search forum.

[rjlohan]

Yeah, been doing that... I don't want to use a mask and BitBlt if I can find a more flexible way. Don't want 2 pictures for every transparent image I want... stoopid vb designers... :grrr: