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Is it possible to change menu runtime using API?

Posted on 2004-10-05
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Hi EveryOne,
Otherday I had a interview. They asked me few questions, some question needs extensive knowledge. Which i don't have being a newbie...

I would like to get remarks from experts on these questons (Visual Basic 6 OR .NET)


- Is it possible to change menu runtime using API?

Regards,
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Question by:ExpertPro
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4 Comments
 
LVL 35

Assisted Solution

by:[ fanpages ]
[ fanpages ] earned 800 total points
ID: 12231350
You can change menu items during runtime using API calls, yes.

You would use the "SendMessage" API routine.

BFN,

fp.
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mladenovicz earned 1200 total points
ID: 12235548
Here is sample

'Download the full source+pictures+.. at http://www.allapi.net/php/redirect/redirect.php?action=download&id=13
Private Declare Function GetMenu Lib "user32" (ByVal hWnd As Long) As Long
Private Declare Function GetMenuItemID Lib "user32" (ByVal hMenu As Long, ByVal nPos As Long) As Long
Private Declare Function GetSubMenu Lib "user32" (ByVal hMenu As Long, ByVal nPos As Long) As Long
Private Declare Function ModifyMenu Lib "user32" Alias "ModifyMenuA" (ByVal hMenu As Long, ByVal nPosition As Long, ByVal wFlags As Long, ByVal wIDNewItem As Long, ByVal lpString As Any) As Long
Const MF_BITMAP = 4
Const MF_CHECKED = 8
Private Sub Form_Load()
    'KPD-Team 1998
    'URL: http://www.allapi.net/
    'E-Mail: KPDTeam@Allapi.net
    Dim hMenu As Long, hSubMenu As Long, lngID As Long

    'Get the handle of the form's menu
    hMenu = GetMenu(Me.hWnd)
    'Get the handle of the form's submenu
    hSubMenu = GetSubMenu(hMenu, 0)

    'Change first item (index=0)
    picBitmaps(0).Picture = picBitmaps(0).Image
    lngID = GetMenuItemID(hSubMenu, 0)
    Call ModifyMenu(hMenu, lngID, MF_BITMAP, lngID, CLng(picBitmaps(0).Picture))

    'Change second item (index=1)
    picBitmaps(1).Picture = picBitmaps(1).Image
    lngID = GetMenuItemID(hSubMenu, 1)
    Call ModifyMenu(hMenu, lngID, MF_BITMAP, lngID, CLng(picBitmaps(1).Picture))

    'Change third item (index=2)
    picBitmaps(2).Picture = picBitmaps(2).Image
    lngID = GetMenuItemID(hSubMenu, 2)
    Call ModifyMenu(hMenu, lngID, MF_BITMAP, lngID, CLng(picBitmaps(2).Picture))

    mnuBitmap1.Checked = True
End Sub
Private Sub mnuBitmap1_Click()
    mnuBitmap1.Checked = Not mnuBitmap1.Checked
End Sub
Private Sub mnuBitmapEnd_Click()
    End
End Sub
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by:ExpertPro
ID: 12331150
Thanks everyone for help!
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LVL 35

Expert Comment

by:[ fanpages ]
ID: 12332673
You're welcome.

Hope you passed the interview.

BFN,

fp.
[ http://NigelLee.info ]
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