Hi All
I have a program which takes photos of members using a web cam, then saves
them as bitmap files
The bitmap is used by a Picturebox to display the photo and clicking on a
button enables the camera and another button takes the photo and saves it
In VS 2003(VB) all worked fine, but since moving up to VS 2005 (VB) when I
try to retake a photo and save it I get error messages
'General exception occurred in GDI+' when I try to save the new photo with
the same name as an existing one
I now call ...
picturebox1.dis pose
picturebox1 = nothing
before taking the new photo and saving but occasionally get messages that
another process has locked the file when I try to delete the existing file
Has anything changed in VS 2005 ???
Below is the full code for the picture capture routine
Regards
Steve
Private Sub btntakephoto_Cl ick(ByVal sender As System.Object, ByVal e As
System.EventArg s) Handles btntakephoto.Cl ick
Dim oDataObj As IDataObject = System.Windows. Forms.Clipboard .GetDataObject( )
Dim sql As String = ""
Dim oImgObj As System.Drawing. Image
Try
Clipboard.Clear ()
' Copy image to clipboard
SendMessage(hHw nd, WM_CAP_EDIT_COP Y, 0, 0)
' Get image from clipboard and convert it to a bitmap
If Not System.Windows. Forms.Clipboard .GetDataObject( ) Is Nothing Then
If oDataObj.GetDat aPresent(System .Windows.Forms. DataFormats.Bit map) Then
oImgObj = oDataObj.GetDat a(DataFormats.B itmap, True)
'To Save as Bitmap
If My.Computer.Fil eSystem.FileExi sts(photopath & Me.Tag & ".bmp") Then
My.Computer.Fil eSystem.DeleteF ile(photopath & Me.Tag & ".bmp")
End If
oImgObj.Save(ph otopath & Me.Tag & ".bmp",
System.Drawing. Imaging.ImageFo rmat.Bmp)
ClosePreviewWin dow()
2  4422 
Hi
Based on my understanding, you get the exception when the code line
"Image.Save " is executed.
If I have any understanding, please feel free to post here.
Can you post the detailed callstack and error message when the exception
occur?
Also have you tried to save to another name when you retake the photo, did
the problem persists?
From your description, the problem may be relieved if you all
picturebox1.dis pose and picturebox1 = nothing, but from your code snippet,
it did not tell us how do you associate the image with the picturebox1. I
just guess it is possible that the picturebox1 is locking the image
file(just an idea).
Can you explain your code logic thoroughlly?
Also you may try to call the GC.Collect after you are trying to dispose the
picturebox1 and set it to null.
Thanks for your efforts!
Best regards,
Peter Huang
Microsoft Online Partner Support
Get Secure! - www.microsoft.com/security
This posting is provided "AS IS" with no warranties, and confers no rights.
Hi
Just want to say Hi, and I was wondering how everything is going.
If anything is unclear, please let me know.
Best regards,
Peter Huang
Microsoft Online Partner Support
Get Secure! - www.microsoft.com/security
This posting is provided "AS IS" with no warranties, and confers no rights. This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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