Disable window resizing

[arif]

How can i disable users from resizing (stretching) a window??
What API function call do i need to make??

Can i use SetWindowLong() api call since i am already using that for disabling the Maximize button??

[Nitro]

Set your borders to "NONE" for your forms.

If using API, use SetWindowPos with the lastparameter as NO_Size.

The No_Size should be a constant, if you look up in the API viewer.

[arif]

Its an MDI form so there is no borderstyle property... & also i did use the SW_NOSIZE constant as the last parameter in the setwindowpos api function call....
I can still resize it even after this....
Any other suggestions??

[Nitro]

During the form_Load or form_Activate, set it a certain size. Assing the width and height to variables. In your form_resize, reassign these variables to me.width and me.height

That is the only other way I know. Yes, it is the cheating's man way.

I will try to think of something more professional in the mean time.

BTW...
Keep the variables on a module level not a prodcedural level. Meaning Dim the variables in the declaration.

[Edited by Nitro on 04-05-2000 at 08:25 PM]

[RCharlton]

Please help

[RCharlton]

please could you send me the code for disabling the Maximize button. I will look out for the thing that stops people stretching a window

Thanks#

Richard Charlton

[Philosopher]

RCharlton, there is no code for the Maximize button, all you have to do is disable it in the Properties window of the form (MaxButton to False) at design time

[arif]

Although u can set the maxbutton property to false at design time, this only works with NON-MDI forms....for your MDI forms u have to do it in code using windows API functions....i looked up several in the API text viewer & the code below will show how to disable the Maximize button on an MDI form & also how to prevent resizing:

Code:
-----

In the General declartions of a Module
----------------------------------------

Private Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long, ByVal dwNewLong As Long) As Long
Private Declare Function GetWindowLong Lib "user32" Alias "GetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long) As Long

Private Const WS_THICKFRAME = &H40000
Private Const WS_MAXIMIZEBOX = &H10000
Private Const GWL_STYLE = (-16)


'This function will make sure the form that is passed to it
' thru its paramater has the Maximize button disabled & cannot
' be resized

Public Sub MaxBox(ByRef PsdForm As Form)
Dim lStyle As Long
lStyle = GetWindowLong(PsdForm.hwnd, GWL_STYLE)

lStyle = lStyle Xor WS_MAXIMIZEBOX Xor WS_THICKFRAME

Call SetWindowLong(PsdForm.hwnd, GWL_STYLE, lStyle)

End Sub

In the Load Event of the MDI form:
----------------------------------

Maxbox Me

[RCharlton]

a minimize button AND no stretching?

Thanks

Richard Charlton

[Sire]

Simply change borderstyle to 0-NONE from 2-Sizable

[mojarqirbal]

Not on an MDI form though.

[RCharlton]

Originally posted by arif
Although u can set the maxbutton property to false at design time, this only works with NON-MDI forms....for your MDI forms u have to do it in code using windows API functions....i looked up several in the API text viewer & the code below will show how to disable the Maximize button on an MDI form & also how to prevent resizing:

Code:
-----

In the General declartions of a Module
----------------------------------------

Private Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long, ByVal dwNewLong As Long) As Long
Private Declare Function GetWindowLong Lib "user32" Alias "GetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long) As Long

Private Const WS_THICKFRAME = &H40000
Private Const WS_MAXIMIZEBOX = &H10000
Private Const GWL_STYLE = (-16)


'This function will make sure the form that is passed to it
' thru its paramater has the Maximize button disabled & cannot
' be resized

Public Sub MaxBox(ByRef PsdForm As Form)
Dim lStyle As Long
lStyle = GetWindowLong(PsdForm.hwnd, GWL_STYLE)

lStyle = lStyle Xor WS_MAXIMIZEBOX Xor WS_THICKFRAME

Call SetWindowLong(PsdForm.hwnd, GWL_STYLE, lStyle)

End Sub

In the Load Event of the MDI form:
----------------------------------

Maxbox Me

The problem I find with this is that there is a blue/yellow border around the ourside of the window, belown the title bar. Why does this happen and can I stop it?

Thanks

Try this.

Private Declare Function GetSystemMenu Lib "user32" (ByVal hwnd As Long, ByVal bRevert As Long) As Long
Private Declare Function RemoveMenu Lib "user32" (ByVal hMenu As Long, ByVal nPosition As Long, ByVal wFlags As Long) As Long
Private Const MF_BYPOSITION = &H400&

Private Sub Form_Load()
    RemoveMenu GetSystemMenu(hwnd, 0), 2, MF_BYPOSITION
End Sub

[RCharlton]

If you would like I will post a screenshot of it on the net so u can see the problem. Please reply if you want to see it.

Richard Charlton