Changing a forms border at runtime?

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Oct 2nd, 2002, 02:02 AM
Wokawidget

Changing a forms border at runtime?

Changing a forms border at runtime?

Resizable to None

Anyone?
Oct 2nd, 2002, 02:18 AM
pnish

1 Attachment(s)

Check out the attached file. It should do what you want.

Cheers
Oct 2nd, 2002, 06:44 AM
Wokawidget

Spot on :D

Cheers

Woka
Oct 2nd, 2002, 06:04 PM
pnish
Just figured out a way to do this without using the API. It seems that the reason changing BorderStyle at runtime doesn't work is because we need the form to redraw. Try this bit of code, it toggles between a normal border and no border.
VB Code:
```
Private Sub Command1_Click()
 
    If Me.BorderStyle = 0 Then
        Me.BorderStyle = vbSizable
    Else
        Me.BorderStyle = vbBSNone
    End If
    
    Me.Caption = Me.Caption
    
End Sub
```
The trick to this working is to reference the form's Caption property which forces the form to redraw. :cool:
Oct 2nd, 2002, 06:16 PM
Mc Brain

Excellent tip!! Thanks for the input.
Oct 13th, 2002, 12:12 PM
Wokawidget

Quote:

Originally posted by pnish
Check out the attached file. It should do what you want.

Cheers

Just out of interest, did you write this code?
the reason i am asking is that when I set the form so it is not resizable, and has no caption, ie No captionbar and no border at all, then when I do Me.Caption = "Woof", the caption bar appears again, which I don't want...BUT if I just have a normal form, that at design time has been set to have no border and no caption, when I do Me.Caption = "Woof", nothing happens???!

Do I have to add code into my app to check for the style of the form at runtime so that I don't change anyof the props acidentally, ie If Caption = "Woof", I don't want the caption bar to appear so when I go to change the caption I would have to write some code to check if it has a caption bar, and if it hasn't then don't set the caption...

Woka
Oct 14th, 2002, 02:02 AM
pnish
Quote:

Just out of interest, did you write this code?

Not guilty I'm afraid, and I can't remember where I got it, maybe the VB-Helper web site.

This is the only code I can own up to:
VB Code:
```
Private Sub Command1_Click()
 
    If Me.BorderStyle = vbBSNone Then
        Me.BorderStyle = vbSizable
    Else
        Me.BorderStyle = vbBSNone
    End If
    
    Me.Caption = Me.Caption
    
End Sub
```
I don't really know the answer to your question, but it sounds like it would be a good idea to check the style of the form before you change any properties that might do weird things.

Good luck
Oct 14th, 2002, 03:07 AM
Wokawidget

Yea, it definately looks that way :(
Oh well...*sigh*

Cheers,

Woka

To change the border style at runtime use:

VB Code:

Option Explicit
 
Public Enum enSetWindowPos
    SWP_FRAMECHANGED = &H20 ' The frame changed: send WM_NCCALCSIZE
    SWP_HIDEWINDOW = &H80
    SWP_NOACTIVATE = &H10
    SWP_NOCOPYBITS = &H100
    SWP_NOMOVE = &H2
    SWP_NOOWNERZORDER = &H200 ' Don't do owner Z ordering
    SWP_NOREDRAW = &H8
    SWP_NOSIZE = &H1
    SWP_NOZORDER = &H4
    SWP_SHOWWINDOW = &H40
End Enum
 
Private Declare Function SetWindowPos Lib "user32" (ByVal hwnd As Long, ByVal hWndInsertAfter As Long, ByVal x As Long, ByVal y As Long, ByVal cx As Long, ByVal cy As Long, ByVal wFlags As Long) As Long
'\ Get Window Long Indexes...
Public Enum enGetWindowLong
    GWL_EXSTYLE = (-20)
    GWL_HINSTANCE = (-6)
    GWL_HWNDPARENT = (-8)
    GWL_ID = (-12)
    GWL_STYLE = (-16)
    GWL_USERDATA = (-21)
    GWL_WNDPROC = (-4)
End Enum
 
Private Declare Function GetWindowLong Lib "user32" Alias "GetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long) As Long
Private Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long, ByVal dwNewLong As Long) As Long
 
'\ Window Style
Public Enum enWindowStyles
    WS_BORDER = &H800000
    WS_CAPTION = &HC00000
    WS_CHILD = &H40000000
    WS_CLIPCHILDREN = &H2000000
    WS_CLIPSIBLINGS = &H4000000
    WS_DISABLED = &H8000000
    WS_DLGFRAME = &H400000
    WS_EX_ACCEPTFILES = &H10&
    WS_EX_DLGMODALFRAME = &H1&
    WS_EX_NOPARENTNOTIFY = &H4&
    WS_EX_TOPMOST = &H8&
    WS_EX_TRANSPARENT = &H20&
    WS_EX_TOOLWINDOW = &H80&
    WS_GROUP = &H20000
    WS_HSCROLL = &H100000
    WS_MAXIMIZE = &H1000000
    WS_MAXIMIZEBOX = &H10000
    WS_MINIMIZE = &H20000000
    WS_MINIMIZEBOX = &H20000
    WS_OVERLAPPED = &H0&
    WS_POPUP = &H80000000
    WS_SYSMENU = &H80000
    WS_TABSTOP = &H10000
    WS_THICKFRAME = &H40000
    WS_VISIBLE = &H10000000
    WS_VSCROLL = &H200000
    '\ New from 95/NT4 onwards
    WS_EX_MDICHILD = &H40
    WS_EX_WINDOWEDGE = &H100
    WS_EX_CLIENTEDGE = &H200
    WS_EX_CONTEXTHELP = &H400
    WS_EX_RIGHT = &H1000
    WS_EX_LEFT = &H0
    WS_EX_RTLREADING = &H2000
    WS_EX_LTRREADING = &H0
    WS_EX_LEFTSCROLLBAR = &H4000
    WS_EX_RIGHTSCROLLBAR = &H0
    WS_EX_CONTROLPARENT = &H10000
    WS_EX_STATICEDGE = &H20000
    WS_EX_APPWINDOW = &H40000
    WS_EX_OVERLAPPEDWINDOW = (WS_EX_WINDOWEDGE Or WS_EX_CLIENTEDGE)
    WS_EX_PALETTEWINDOW = (WS_EX_WINDOWEDGE Or WS_EX_TOOLWINDOW Or WS_EX_TOPMOST)
End Enum
 
Dim oldVal As FormBorderStyleConstants

...continued...

VB Code:

Public Property Get RuntimeFormBorderStyle() As FormBorderStyleConstants
 
RuntimeFormBorderStyle = oldVal
 
End Property
 
Public Property Let RuntimeFormBorderStyle(ByVal newVal As FormBorderStyleConstants)
 
 
If newVal <> oldVal Then
    Select Case newVal
    Case vbBSNone
        WindowStyle(WS_BORDER) = False
        WindowStyle(WS_CAPTION) = False
        WindowStyle(WS_DLGFRAME) = False
        WindowStyle(WS_EX_DLGMODALFRAME) = False
        WindowStyle(WS_EX_TOOLWINDOW) = False
        WindowStyle(WS_MAXIMIZEBOX) = Me.MaxButton
        WindowStyle(WS_MINIMIZEBOX) = Me.MinButton
        WindowStyle(WS_SYSMENU) = Me.ControlBox
        WindowStyle(WS_THICKFRAME) = False
        WindowStyle(WS_VSCROLL) = False
        WindowStyle(WS_EX_WINDOWEDGE) = False
        WindowStyle(WS_EX_CLIENTEDGE) = False
        WindowStyle(WS_EX_CONTROLPARENT) = False
        WindowStyle(WS_EX_STATICEDGE) = False
        WindowStyle(WS_EX_APPWINDOW) = False
        
    Case vbFixedDialog
        WindowStyle(WS_BORDER) = True
        WindowStyle(WS_CAPTION) = True
        WindowStyle(WS_DLGFRAME) = True
        WindowStyle(WS_EX_DLGMODALFRAME) = True
        WindowStyle(WS_EX_TOOLWINDOW) = False
        WindowStyle(WS_MAXIMIZEBOX) = Me.MaxButton
        WindowStyle(WS_MINIMIZEBOX) = Me.MinButton
        WindowStyle(WS_SYSMENU) = Me.ControlBox
        WindowStyle(WS_THICKFRAME) = False
        WindowStyle(WS_EX_WINDOWEDGE) = True
        WindowStyle(WS_EX_CLIENTEDGE) = False
        WindowStyle(WS_EX_STATICEDGE) = False
        WindowStyle(WS_EX_APPWINDOW) = Me.ShowInTaskbar
 
        
    Case vbFixedSingle
        WindowStyle(WS_BORDER) = True
        WindowStyle(WS_CAPTION) = True
        WindowStyle(WS_DLGFRAME) = True
        WindowStyle(WS_EX_DLGMODALFRAME) = False
        WindowStyle(WS_EX_TOOLWINDOW) = False
        WindowStyle(WS_MAXIMIZEBOX) = Me.MaxButton
        WindowStyle(WS_MINIMIZEBOX) = Me.MinButton
        WindowStyle(WS_SYSMENU) = Me.ControlBox
        WindowStyle(WS_THICKFRAME) = True
        WindowStyle(WS_EX_WINDOWEDGE) = True
        WindowStyle(WS_EX_CLIENTEDGE) = False
        WindowStyle(WS_EX_STATICEDGE) = False
        WindowStyle(WS_EX_APPWINDOW) = Me.ShowInTaskbar
        
    Case vbFixedToolWindow
        WindowStyle(WS_BORDER) = True
        WindowStyle(WS_CAPTION) = True
        WindowStyle(WS_DLGFRAME) = True
        WindowStyle(WS_EX_DLGMODALFRAME) = False
        WindowStyle(WS_EX_TOOLWINDOW) = True
        WindowStyle(WS_MAXIMIZEBOX) = Me.MaxButton
        WindowStyle(WS_MINIMIZEBOX) = Me.MinButton
        WindowStyle(WS_SYSMENU) = Me.ControlBox
        WindowStyle(WS_THICKFRAME) = False
        WindowStyle(WS_EX_WINDOWEDGE) = True
        WindowStyle(WS_EX_CLIENTEDGE) = False
        WindowStyle(WS_EX_STATICEDGE) = False
        WindowStyle(WS_EX_APPWINDOW) = Me.ShowInTaskbar
    
    Case vbSizable
        WindowStyle(WS_BORDER) = True
        WindowStyle(WS_CAPTION) = True
        WindowStyle(WS_DLGFRAME) = True
        WindowStyle(WS_EX_DLGMODALFRAME) = False
        WindowStyle(WS_EX_TOOLWINDOW) = False
        WindowStyle(WS_MAXIMIZEBOX) = Me.MaxButton
        WindowStyle(WS_MINIMIZEBOX) = Me.MinButton
        WindowStyle(WS_SYSMENU) = Me.ControlBox
        WindowStyle(WS_THICKFRAME) = True
        WindowStyle(WS_EX_WINDOWEDGE) = True
        WindowStyle(WS_EX_CLIENTEDGE) = False
        WindowStyle(WS_EX_APPWINDOW) = Me.ShowInTaskbar
 
        
    Case vbSizableToolWindow
        WindowStyle(WS_BORDER) = True
        WindowStyle(WS_CAPTION) = True
        WindowStyle(WS_DLGFRAME) = True
        WindowStyle(WS_EX_DLGMODALFRAME) = False
        WindowStyle(WS_EX_TOOLWINDOW) = True
        WindowStyle(WS_MAXIMIZEBOX) = Me.MaxButton
        WindowStyle(WS_MINIMIZEBOX) = Me.MinButton
        WindowStyle(WS_SYSMENU) = Me.ControlBox
        WindowStyle(WS_THICKFRAME) = False
        WindowStyle(WS_EX_WINDOWEDGE) = True
        WindowStyle(WS_EX_CLIENTEDGE) = False
        WindowStyle(WS_EX_STATICEDGE) = False
        WindowStyle(WS_EX_APPWINDOW) = Me.ShowInTaskbar
    
    End Select
    '\\ Refresh the window
    Call SetWindowPos(Me.hwnd, 0, 0, 0, 0, 0, SWP_NOMOVE + SWP_NOSIZE + SWP_FRAMECHANGED)
    Me.Refresh
    oldVal = newVal
    
End If
 
End Property
 
 
Public Property Let WindowStyle(ByVal Index As enWindowStyles, ByVal newVal As Boolean)
 
Dim gwIndex As enGetWindowLong
Dim lCurStyle As Long
 
If Index = WS_EX_ACCEPTFILES Or Index = WS_EX_APPWINDOW _
   Or Index = WS_EX_CLIENTEDGE Or Index = WS_EX_CONTEXTHELP _
   Or Index = WS_EX_CONTROLPARENT Or Index = WS_EX_DLGMODALFRAME _
   Or Index = WS_EX_LEFT Or Index = WS_EX_LEFTSCROLLBAR _
   Or Index = WS_EX_LTRREADING Or Index = WS_EX_MDICHILD _
   Or Index = WS_EX_NOPARENTNOTIFY Or Index = WS_EX_OVERLAPPEDWINDOW _
   Or Index = WS_EX_PALETTEWINDOW Or Index = WS_EX_RIGHT _
   Or Index = WS_EX_RIGHTSCROLLBAR Or Index = WS_EX_RTLREADING _
   Or Index = WS_EX_STATICEDGE Or Index = WS_EX_TOOLWINDOW _
   Or Index = WS_EX_TOPMOST Or Index = WS_EX_TRANSPARENT _
   Or Index = WS_EX_WINDOWEDGE Then
    '\ Extended window style
    gwIndex = GWL_EXSTYLE
Else
    '\ Standard window style
    gwIndex = GWL_STYLE
End If
 
lCurStyle = GetWindowLong(Me.hwnd, gwIndex)
If newVal Then
    lCurStyle = lCurStyle Or Index
Else
    lCurStyle = lCurStyle And (Not Index)
End If
Call SetWindowLong(Me.hwnd, gwIndex, lCurStyle)
 
End Property
 
Public Property Get WindowStyle(ByVal Index As enWindowStyles) As Boolean
 
Dim gwIndex As enGetWindowLong
Dim lCurStyle As Long
 
If Index = WS_EX_ACCEPTFILES Or Index = WS_EX_APPWINDOW _
   Or Index = WS_EX_CLIENTEDGE Or Index = WS_EX_CONTEXTHELP _
   Or Index = WS_EX_CONTROLPARENT Or Index = WS_EX_DLGMODALFRAME _
   Or Index = WS_EX_LEFT Or Index = WS_EX_LEFTSCROLLBAR _
   Or Index = WS_EX_LTRREADING Or Index = WS_EX_MDICHILD _
   Or Index = WS_EX_NOPARENTNOTIFY Or Index = WS_EX_OVERLAPPEDWINDOW _
   Or Index = WS_EX_PALETTEWINDOW Or Index = WS_EX_RIGHT _
   Or Index = WS_EX_RIGHTSCROLLBAR Or Index = WS_EX_RTLREADING _
   Or Index = WS_EX_STATICEDGE Or Index = WS_EX_TOOLWINDOW _
   Or Index = WS_EX_TOPMOST Or Index = WS_EX_TRANSPARENT _
   Or Index = WS_EX_WINDOWEDGE Then
    '\\ Extended window style
    gwIndex = GWL_EXSTYLE
Else
    '\\ Standard window style
    gwIndex = GWL_STYLE
End If
 
lCurStyle = GetWindowLong(Me.hwnd, gwIndex)
 
WindowStyle = (lCurStyle Or Index) = lCurStyle
 
End Property

Oct 14th, 2002, 03:46 AM
Wokawidget
Cheers, but I can't seem to get it to work :(
I am using:
VB Code:
```
Private Sub Form_Load()
    RuntimeFormBorderStyle = vbBSNone
End Sub
```
Any ideas?

Woka
Oct 14th, 2002, 04:09 AM
MerrionComputin
Good catch..I hadn't initialised oldVal, so it thought the form was already borderless and didn't do anything. Try:
VB Code:
```
Private Sub Form_Load()
 
oldVal = Me.BorderStyle
Me.RuntimeFormBorderStyle = vbBSNone
 
End Sub
```
Oct 14th, 2002, 04:14 AM
Wokawidget
Almost works...
VB Code:
```
Private Sub Form_Load()
    oldVal = Me.BorderStyle
    RuntimeFormBorderStyle = vbBSNone
    Me.Caption = "WOOF"
End Sub
```
Like the code posted at the top of the thread, when you set the caption, the caption bar appears :( If you set the borderstyle at design time to = None, then this doesn't happen. Also, setting the style to vbBSNone, still leaves the forms with a border, just no caption box :(

Getting there :D

Cheers for your help...

Woka

Quote:

when you set the caption, the caption bar appears

Whenever you change the caption, VB refreshes the form with it's own internal version of the window style. Therefore you need to replace calls to the Caption propertyu with SetWindowText API call:
VB Code:
Private Declare Function SetWindowText Lib "user32" Alias "SetWindowTextA" (ByVal hwnd As Long, ByVal lpString As String) As Long
 
Private Sub Form_Load()
    oldVal = Me.BorderStyle
    RuntimeFormBorderStyle = vbBSNone
    Call SetWindowText(Me.hwnd, "WOOF")
    Debug.Print Me.Caption
    
End Sub

Oct 14th, 2002, 04:52 AM
Wokawidget

Excellent...cheers :D

Ok, when you set the border = vbBSNone, should it remove the border from the form??? It just removed the caption bar, so I am left with a 3d looking form...not a completely flat borderless one :(

Woka

PS My API is getting there slowly...My work/company, doesn't give us time to develop UI, which use API...all our development time is concentrated into the DCOM side of applications, which is a shame as I prefer UI coding...Boooooooo!