It is impossible to make a window transparent on netcf/windows ce, but you can make it appear as if a window was transparent.
There are 2 basic approaches for solving your problem.
1. Implement a custom control that draws text in its OnPaint method, and draws the appropriate section of the picture in its OnPaintBackground method.
2. Do not use a control for displaying your message at all. In a paint handler of the control underneath, draw the text you wish to display.
David Wrighton
.NET Compact Framework
Private Sub PctBPush_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles PctBPush.Paint Dim gr As Graphics = e.Graphics Dim font As New System.Drawing.Font("Verdana", 8, FontStyle.Bold) Dim brush As New SolidBrush(Color.Black) gr.DrawString(message, font, brush, PctBPush.Left + 60, PctBPush.Top - 35) End Sub |
You can make label Really Transparent by
More on http://dzonny.cz/Software/Blog/tabid/93/EntryID/2/Default.aspx, working example on http://codeplex.com/DTools
The sample provided by ?onny will not work correctly on the Compact Framework due to missing functionality in both the Compact Framework and the underlying Windows CE operating system.
For instance the SetStyle method is not available and the WS_EX_TRANSPARENT (&H20) window style is not supported (as mentioned by David Wrighton).
You may also like to have a look at the following thread for some alternative (more designer IDE friendly) techniques for implementing this http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=1557544&SiteID=1. In particular Alex yakhnin's technique listed in his blog here http://blog.opennetcf.org/ayakhnin/PermaLink,guid,34221459-8db8-41ef-91c7-5514eade8fca.aspx.
Hope it helps,
Christopher Fairbairn
