Difference between revisions of "How to get tooltip handle in NET"
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.NET ToolTip control doesn't expose Handle property. | .NET ToolTip control doesn't expose Handle property. | ||
Then we should use InvokeMember to retrieve that property | Then we should use InvokeMember to retrieve that property | ||
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The following function returns the handle: | The following function returns the handle: | ||
| − | Public Shared Function GetToolTipHandle(ByVal ctrlToolTip As ToolTip) As IntPtr | + | Public Shared Function GetToolTipHandle(ByVal ctrlToolTip As ToolTip) As IntPtr |
| − | + | ||
Dim obj As Object | Dim obj As Object | ||
Dim hwnd As IntPtr | Dim hwnd As IntPtr | ||
| Line 16: | Line 14: | ||
hwnd = CType(obj, IntPtr) | hwnd = CType(obj, IntPtr) | ||
Catch ex As Exception | Catch ex As Exception | ||
| − | + | ||
End Try | End Try | ||
Return hwnd | Return hwnd | ||
| + | |||
| + | End Function | ||
| − | + | How to use the function in your program: | |
| + | Dim hwnd as IntPtr = GetToolTipHandle(ToolTip1) | ||
| − | + | To convert the pointer to numeric(integer) use like this: | |
| − | + | ||
| − | + | ||
| − | + | hwnd.toInt32() | |
Latest revision as of 07:58, 16 September 2009
| This article is based on Visual Basic.NET. Find other Visual Basic.NET articles. |
.NET ToolTip control doesn't expose Handle property. Then we should use InvokeMember to retrieve that property
The following function returns the handle:
Public Shared Function GetToolTipHandle(ByVal ctrlToolTip As ToolTip) As IntPtr
Dim obj As Object
Dim hwnd As IntPtr
Try
hwnd = IntPtr.Zero
obj = GetType(ToolTip).InvokeMember("Handle", Reflection.BindingFlags.NonPublic Or Reflection.BindingFlags.Instance Or Reflection.BindingFlags.GetProperty, Nothing, ctrlToolTip, Nothing)
hwnd = CType(obj, IntPtr)
Catch ex As Exception
End Try
Return hwnd
End Function
How to use the function in your program:
Dim hwnd as IntPtr = GetToolTipHandle(ToolTip1)
To convert the pointer to numeric(integer) use like this:
hwnd.toInt32()
