.net - Control GDI Handle Leak ?

Jul 28, 2009

I have a problem with a control leaking GDI handles.

This is the cut-down version of the control:

Public Class FancyLabel
Inherits Label

Protected Overrides Sub OnPaint(ByVal e As System.Windows.Forms.PaintEventArgs)

[CODE]...

When I run the program, the GDI object count is 38. Then I open a form that has only one FancyLabel on it and the GDI object count gets increased to 42. I then close the form and the GDI count falls down to 39 and stays there no matter how many instances of the form I create and close.JV

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For Each RW As DataGridViewRow In Me.DataGridView1.SelectedRows
'''''''''''#######cell values into strings ########''''''''''''''
If RW.Selected = True Then
Dim domain As String

[code]....

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Declaration

Code:
Friend Bay(29) As BayControl
Add the controls to Form
Code:
For Simindex = 0 To 29 'Me.Bays - 1

[Code].....

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I show a waiting form (saying "Please wait...") on a different thread when there is long-running code in some forms (for example, during data loading). I show the form like this:

m_PopProcessingThread = New Thread(New ThreadStart(
Sub()
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Application.Run(m_PopProcessingForm)
End Sub))

[Code]...

The stack trace points to the part of code where I hide the form. How could the handle not have been created, when just before the Invoke call, I loop until said handle is created?

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BLUE='e[0;34m'
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Example : FindWindowEx, AccessibleObjectFromPoint, AccessibleObjectFromEvent, AccessibleObjectFromWindow..

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[Code]....

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Oct 21, 2010

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[Code]...

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[Code]...

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For example:

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[Code]...

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Code
Public Class TabPageEx
Inherits System.Windows.Forms.TabPage

[code]....

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Mar 20, 2010

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InvoiceAdd.vb:

' Instantiate objects of the various database interaction classes.
Private mCustomer As New Customers
Private mItem As New Items

[code]....

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I mean:

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