196.txt

介绍VB里的各种控件的使用方法,窗口控制,图像编程以及OCX等内容,还提供了一个API集供参考.

在菜单上增加图标

声明：
Declare Function GetMenu Lib "user32" (ByVal hwnd As Long) As Long
Declare Function GetSubMenu Lib "user32" (ByVal hMenu As Long, ByVal nPos As Long) As Long 
Declare Function GetMenuItemID Lib "user32" (ByVal hMenu As Long, ByVal nPos As Long) As Long 
Declare Function SetMenuItemBitmaps Lib "user32" (ByVal hMenu As Long, ByVal nPosition As Long, ByVal wFlags As Long, ByVal hBitmapUnchecked As Long, ByVal hBitmapChecked As Long) As Long
Public Const MF_BITMAP = &H4& 
Type MENUITEMINFO 
cbSize As Long 
fMask As Long 
fType As Long 
fState As Long 
wID As Long 
hSubMenu As Long 
hbmpChecked As Long 
hbmpUnchecked As Long 
dwItemData As Long 
dwTypeData As String 
cch As Long 
End Type 
Declare Function GetMenuItemCount Lib "user32" (ByVal hMenu As Long) As Long 
Declare Function GetMenuItemInfo Lib "user32" Alias "GetMenuItemInfoA" (ByVal hMenu As Long, ByVal un As Long, ByVal b As Boolean, lpMenuItemInfo As MENUITEMINFO) As Boolean 
Public Const MIIM_ID = &H2 
Public Const MIIM_TYPE = &H10 
Public Const MFT_STRING = &H0&


使用： 在 Form1 中增加一个 PictureBox1， AutoSize 为 True， 放一个小 Bmp (不是 Icon！推荐 13*13)。
Private Sub Command1_Click()

'Get the menuhandle of your app
hMenu& = GetMenu(Form1.hwnd)

'Get the handle of the first submenu (Hello)
hSubMenu& = GetSubMenu(hMenu&, 0)

'Get the menuId of the first entry (Bitmap)
hID& = GetMenuItemID(hSubMenu&, 0)

'Add the bitmap
SetMenuItemBitmaps hMenu&, hID&, MF_BITMAP, Picture1.Picture, Picture1.Picture
'You can add two bitmaps to a menuentry
'One for the checked and one for the unchecked
'state.

End Sub