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Postmessage API

Hi,

I created a form in VB.Net with only one button. This is the code in
button click event

Private Sub Button1_Click(B yVal sender As System.Object, ByVal e As
System.EventArg s) Handles Button1.Click
AppGlobals.SetH andles(Me.Handl e.ToInt64())
Call OpenModel()
End Sub

appglobals.seth andles set the handle to window to be used by
postmessage function

Private Declare Function RegisterWindowM essage Lib "user32" Alias
"RegisterWindow MessageA" (ByVal lpString As String) As IntPtr
Private Declare Function FindWindow Lib "user32" Alias
"FindWindow A" (ByVal lpClassName As String, ByVal lpWindowName As
String) As IntPtr

'Private m_xlWindowHandl e As IntPtr
Private m_xlWindowHandl e As Long
Private m_xlMessageID_S C As IntPtr
Private m_xlMessageID_C As IntPtr

Public Const c_RegistryKey As String =
"Software\Pzena \StockAnalyzer. NET\Client"
Public Const r_RegistryKey As String =
"Software\Pzena \StockAnalyzer. NET\Report"

Public Sub SetHandles(Opti onal ByVal WndHandle As Long = 0)
If WndHandle <> 0 Then
xlWindowHandle = WndHandle
Else
'Modified by nikki
'xlWindowHandle = oParentForm.Act iveMainForm.Han dle.ToInt64
End If
'xlWindowHandle = oParentForm.Act iveMainForm.Han dle
xlMessageID_SC = RegisterWindowM essage("WM_EXCE L_SAVE_CLOSE")
xlMessageID_C = RegisterWindowM essage("WM_EXCE L_CLOSE")
End Sub

Public Property xlWindowHandle( )
Get
Return m_xlWindowHandl e
End Get
Set(ByVal Value)
m_xlWindowHandl e = Value
End Set
End Property

Public Property xlMessageID_SC( )
Get
Return m_xlMessageID_S C.ToInt64
End Get
Set(ByVal Value)
m_xlMessageID_S C = Value
End Set
End Property

Public Property xlMessageID_C()
Get
Return m_xlMessageID_C .ToInt64
End Get
Set(ByVal Value)
m_xlMessageID_C = Value
End Set
End Property

Public ReadOnly Property xlMessageID32_S C()
Get
Return m_xlMessageID_S C.ToInt32
End Get
End Property

Public ReadOnly Property xlMessageID32_C ()
Get
Return m_xlMessageID_C .ToInt32
End Get
End Property

OpenModel function calls VBA routine in EXCEl like. This Open Model
function is defined in another class as Class1. There is one more
function call SaveModel defined in same Class1
xlApp.Run("Open Model", "In Excel", CType(xlWindowH andle, Integer),
CType(xlMessage ID_SC, Integer), CType(xlMessage ID_C, Integer))

I added one menu in excel at runtime called Menu1 and has one submenu
submenu1
When I click on submenu1 then I am calling this routine
PostMessage(hwn d,wmsave,0,0).

The point is when this Postmessage is executed then it should execute
SaveModel in Class1 in VB.Net but somehow the control is not returned
to it. I don;t know what exactly is the problem. If somebody please
let me know then I will really appreciate them.

Thanks
Nikki

May 23 '06 #1
3 9450
Remove all the ToInt64 stuff. A window handle should be treated as an
IntPtr, not as long
Also rewrite your declare like this:

Private Declare Auto Function RegisterWindowM essage Lib "user32" (ByVal
lpString As String) As Integer
Private Declare Auto Function FindWindow Lib "user32" (ByVal lpClassName As
String, ByVal lpWindowName As String) As IntPtr

Let the runtime figure out if it should call the ansi or unicode version.
Also note that RegisterWindowM essage returns an integer, not IntPtr
/claes

<kn*****@yahoo. com> wrote in message
news:11******** *************@g 10g2000cwb.goog legroups.com...
Hi,

I created a form in VB.Net with only one button. This is the code in
button click event

Private Sub Button1_Click(B yVal sender As System.Object, ByVal e As
System.EventArg s) Handles Button1.Click
AppGlobals.SetH andles(Me.Handl e.ToInt64())
Call OpenModel()
End Sub

appglobals.seth andles set the handle to window to be used by
postmessage function

Private Declare Function RegisterWindowM essage Lib "user32" Alias
"RegisterWindow MessageA" (ByVal lpString As String) As IntPtr
Private Declare Function FindWindow Lib "user32" Alias
"FindWindow A" (ByVal lpClassName As String, ByVal lpWindowName As
String) As IntPtr

'Private m_xlWindowHandl e As IntPtr
Private m_xlWindowHandl e As Long
Private m_xlMessageID_S C As IntPtr
Private m_xlMessageID_C As IntPtr

Public Const c_RegistryKey As String =
"Software\Pzena \StockAnalyzer. NET\Client"
Public Const r_RegistryKey As String =
"Software\Pzena \StockAnalyzer. NET\Report"

Public Sub SetHandles(Opti onal ByVal WndHandle As Long = 0)
If WndHandle <> 0 Then
xlWindowHandle = WndHandle
Else
'Modified by nikki
'xlWindowHandle = oParentForm.Act iveMainForm.Han dle.ToInt64
End If
'xlWindowHandle = oParentForm.Act iveMainForm.Han dle
xlMessageID_SC = RegisterWindowM essage("WM_EXCE L_SAVE_CLOSE")
xlMessageID_C = RegisterWindowM essage("WM_EXCE L_CLOSE")
End Sub

Public Property xlWindowHandle( )
Get
Return m_xlWindowHandl e
End Get
Set(ByVal Value)
m_xlWindowHandl e = Value
End Set
End Property

Public Property xlMessageID_SC( )
Get
Return m_xlMessageID_S C.ToInt64
End Get
Set(ByVal Value)
m_xlMessageID_S C = Value
End Set
End Property

Public Property xlMessageID_C()
Get
Return m_xlMessageID_C .ToInt64
End Get
Set(ByVal Value)
m_xlMessageID_C = Value
End Set
End Property

Public ReadOnly Property xlMessageID32_S C()
Get
Return m_xlMessageID_S C.ToInt32
End Get
End Property

Public ReadOnly Property xlMessageID32_C ()
Get
Return m_xlMessageID_C .ToInt32
End Get
End Property

OpenModel function calls VBA routine in EXCEl like. This Open Model
function is defined in another class as Class1. There is one more
function call SaveModel defined in same Class1
xlApp.Run("Open Model", "In Excel", CType(xlWindowH andle, Integer),
CType(xlMessage ID_SC, Integer), CType(xlMessage ID_C, Integer))

I added one menu in excel at runtime called Menu1 and has one submenu
submenu1
When I click on submenu1 then I am calling this routine
PostMessage(hwn d,wmsave,0,0).

The point is when this Postmessage is executed then it should execute
SaveModel in Class1 in VB.Net but somehow the control is not returned
to it. I don;t know what exactly is the problem. If somebody please
let me know then I will really appreciate them.

Thanks
Nikki

May 24 '06 #2
Hello knikkix,

Also review the PostMessage declaration. It should be something like:
declare function PostMessage lib "user32.dll " (byval hWnd as intptr, byval Msg as uint32, byval lParam as int32, byval wParam as int32) as int32

Regards.
<kn*****@yahoo. com> escribió en el mensaje news:11******** *************@g 10g2000cwb.goog legroups.com...
| Hi,
|
| I created a form in VB.Net with only one button. This is the code in
| button click event
|
| Private Sub Button1_Click(B yVal sender As System.Object, ByVal e As
| System.EventArg s) Handles Button1.Click
| AppGlobals.SetH andles(Me.Handl e.ToInt64())
| Call OpenModel()
| End Sub
|
| appglobals.seth andles set the handle to window to be used by
| postmessage function
|
| Private Declare Function RegisterWindowM essage Lib "user32" Alias
| "RegisterWindow MessageA" (ByVal lpString As String) As IntPtr
| Private Declare Function FindWindow Lib "user32" Alias
| "FindWindow A" (ByVal lpClassName As String, ByVal lpWindowName As
| String) As IntPtr
|
| 'Private m_xlWindowHandl e As IntPtr
| Private m_xlWindowHandl e As Long
| Private m_xlMessageID_S C As IntPtr
| Private m_xlMessageID_C As IntPtr
|
| Public Const c_RegistryKey As String =
| "Software\Pzena \StockAnalyzer. NET\Client"
| Public Const r_RegistryKey As String =
| "Software\Pzena \StockAnalyzer. NET\Report"
|
| Public Sub SetHandles(Opti onal ByVal WndHandle As Long = 0)
| If WndHandle <> 0 Then
| xlWindowHandle = WndHandle
| Else
| 'Modified by nikki
| 'xlWindowHandle = oParentForm.Act iveMainForm.Han dle.ToInt64
| End If
| 'xlWindowHandle = oParentForm.Act iveMainForm.Han dle
| xlMessageID_SC = RegisterWindowM essage("WM_EXCE L_SAVE_CLOSE")
| xlMessageID_C = RegisterWindowM essage("WM_EXCE L_CLOSE")
| End Sub
|
| Public Property xlWindowHandle( )
| Get
| Return m_xlWindowHandl e
| End Get
| Set(ByVal Value)
| m_xlWindowHandl e = Value
| End Set
| End Property
|
| Public Property xlMessageID_SC( )
| Get
| Return m_xlMessageID_S C.ToInt64
| End Get
| Set(ByVal Value)
| m_xlMessageID_S C = Value
| End Set
| End Property
|
| Public Property xlMessageID_C()
| Get
| Return m_xlMessageID_C .ToInt64
| End Get
| Set(ByVal Value)
| m_xlMessageID_C = Value
| End Set
| End Property
|
| Public ReadOnly Property xlMessageID32_S C()
| Get
| Return m_xlMessageID_S C.ToInt32
| End Get
| End Property
|
| Public ReadOnly Property xlMessageID32_C ()
| Get
| Return m_xlMessageID_C .ToInt32
| End Get
| End Property
|
| OpenModel function calls VBA routine in EXCEl like. This Open Model
| function is defined in another class as Class1. There is one more
| function call SaveModel defined in same Class1
| xlApp.Run("Open Model", "In Excel", CType(xlWindowH andle, Integer),
| CType(xlMessage ID_SC, Integer), CType(xlMessage ID_C, Integer))
|
| I added one menu in excel at runtime called Menu1 and has one submenu
| submenu1
| When I click on submenu1 then I am calling this routine
| PostMessage(hwn d,wmsave,0,0).
|
| The point is when this Postmessage is executed then it should execute
| SaveModel in Class1 in VB.Net but somehow the control is not returned
| to it. I don;t know what exactly is the problem. If somebody please
| let me know then I will really appreciate them.
|
| Thanks
| Nikki
|
May 24 '06 #3
You can also overload PostMessage if you need other types for lParam and/or
wParam. The marshaler will handle the conversion for you (within limits)

/claes

"José Manuel Agüero" <chema012_hotma il.com> wrote in message
news:Oh******** ******@TK2MSFTN GP04.phx.gbl...
Hello knikkix,

Also review the PostMessage declaration. It should be something like:
declare function PostMessage lib "user32.dll " (byval hWnd as intptr, byval
Msg as uint32, byval lParam as int32, byval wParam as int32) as int32

Regards.
<kn*****@yahoo. com> escribió en el mensaje
news:11******** *************@g 10g2000cwb.goog legroups.com...
| Hi,
|
| I created a form in VB.Net with only one button. This is the code in
| button click event
|
| Private Sub Button1_Click(B yVal sender As System.Object, ByVal e As
| System.EventArg s) Handles Button1.Click
| AppGlobals.SetH andles(Me.Handl e.ToInt64())
| Call OpenModel()
| End Sub
|
| appglobals.seth andles set the handle to window to be used by
| postmessage function
|
| Private Declare Function RegisterWindowM essage Lib "user32" Alias
| "RegisterWindow MessageA" (ByVal lpString As String) As IntPtr
| Private Declare Function FindWindow Lib "user32" Alias
| "FindWindow A" (ByVal lpClassName As String, ByVal lpWindowName As
| String) As IntPtr
|
| 'Private m_xlWindowHandl e As IntPtr
| Private m_xlWindowHandl e As Long
| Private m_xlMessageID_S C As IntPtr
| Private m_xlMessageID_C As IntPtr
|
| Public Const c_RegistryKey As String =
| "Software\Pzena \StockAnalyzer. NET\Client"
| Public Const r_RegistryKey As String =
| "Software\Pzena \StockAnalyzer. NET\Report"
|
| Public Sub SetHandles(Opti onal ByVal WndHandle As Long = 0)
| If WndHandle <> 0 Then
| xlWindowHandle = WndHandle
| Else
| 'Modified by nikki
| 'xlWindowHandle = oParentForm.Act iveMainForm.Han dle.ToInt64
| End If
| 'xlWindowHandle = oParentForm.Act iveMainForm.Han dle
| xlMessageID_SC = RegisterWindowM essage("WM_EXCE L_SAVE_CLOSE")
| xlMessageID_C = RegisterWindowM essage("WM_EXCE L_CLOSE")
| End Sub
|
| Public Property xlWindowHandle( )
| Get
| Return m_xlWindowHandl e
| End Get
| Set(ByVal Value)
| m_xlWindowHandl e = Value
| End Set
| End Property
|
| Public Property xlMessageID_SC( )
| Get
| Return m_xlMessageID_S C.ToInt64
| End Get
| Set(ByVal Value)
| m_xlMessageID_S C = Value
| End Set
| End Property
|
| Public Property xlMessageID_C()
| Get
| Return m_xlMessageID_C .ToInt64
| End Get
| Set(ByVal Value)
| m_xlMessageID_C = Value
| End Set
| End Property
|
| Public ReadOnly Property xlMessageID32_S C()
| Get
| Return m_xlMessageID_S C.ToInt32
| End Get
| End Property
|
| Public ReadOnly Property xlMessageID32_C ()
| Get
| Return m_xlMessageID_C .ToInt32
| End Get
| End Property
|
| OpenModel function calls VBA routine in EXCEl like. This Open Model
| function is defined in another class as Class1. There is one more
| function call SaveModel defined in same Class1
| xlApp.Run("Open Model", "In Excel", CType(xlWindowH andle, Integer),
| CType(xlMessage ID_SC, Integer), CType(xlMessage ID_C, Integer))
|
| I added one menu in excel at runtime called Menu1 and has one submenu
| submenu1
| When I click on submenu1 then I am calling this routine
| PostMessage(hwn d,wmsave,0,0).
|
| The point is when this Postmessage is executed then it should execute
| SaveModel in Class1 in VB.Net but somehow the control is not returned
| to it. I don;t know what exactly is the problem. If somebody please
| let me know then I will really appreciate them.
|
| Thanks
| Nikki
|
May 25 '06 #4

This thread has been closed and replies have been disabled. Please start a new discussion.

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