AnnStampObject Transparency.

Hi,

how is possible to make the AnnStampObject transparent to mouse clicks. If  I have two or more AnnStampObject one over one, with a transparent color defined how I can click on the picture and select what I have under the stamp?. I use Dotnet 14.5 version with VB.

Thanks.

I don't know of a direct way to do that, but you could try to do it indirectly as follows:
1. When detecting the mouse click on the stamp object, examine if the coordinates are on the transparent part or not.
2. If they are, store the coordinates and hide the object.
3. Call the HitTest method using the same coordinates to check if there's an object beneath the stamp you have just hidden.
4. Show the stamp object again.

Hi,

how I can get the coordinates of the pixel in the AnnObject. The HitTest method use the screen coordinates or the mouse down event, that are the screen coordinates. So if I don't wrong i have to convert the coordinates. I think to subtract the BoundingRectangle coordinates from then coordinates of the HitTest method, but this is not correct because the HitTest method use the screen coordinates, and if i0m working in zoom mode this is not correct. What can I try?

Hello,

To convert from screen coordinates to bitmap coordinates, you can use the following sample:

Private Sub RasterImageViewer1_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles RasterImageViewer1.MouseDown
        Dim _trans As New Leadtools.Helpers.Transformer
        _trans.Transform = RasterImageViewer1.Transform
        Dim ptIn As New PointF(e.X, e.Y)
        Dim ptOut = _trans.PointToLogical(ptIn)
        Me.Text = ptOut.X.ToString + ":" + ptOut.Y.ToString
 End Sub

The sample above returns the actual coordinates of a certain pixel regardless of zooming in or out the image and scrolling it up or down.

For more information about the transformation mechanism, refer to the "Transformer Class" topic in the .NET Class Library help file.

Kind regards,

Great!!!

all works fine!!

Thanks!