form1.frm

vb得100个编程实例

VERSION 5.00
Begin VB.Form Form1 
   BorderStyle     =   1  'Fixed Single
   Caption         =   "Form1"
   ClientHeight    =   2850
   ClientLeft      =   1980
   ClientTop       =   2670
   ClientWidth     =   5025
   Icon            =   "Form1.frx":0000
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   ScaleHeight     =   2850
   ScaleWidth      =   5025
   Begin VB.Label Label1 
      Caption         =   "    当右键单击窗口的标题栏时，会弹出系统预置的菜单，这个实例演示了如何在系统菜单里加上自己的菜单项，并可以恢复到原来的菜单。"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   855
      Left            =   480
      TabIndex        =   0
      Top             =   840
      Width           =   4215
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit

Private Sub Form_Load()
    
    OldWindowProc = GetWindowLong(Form1.hwnd, GWL_WNDPROC)
    ' 取得窗口函数的地址
    Call SetWindowLong(Form1.hwnd, GWL_WNDPROC, AddressOf SubClass1_WndMessage)
    ' 用SubClass1_WndMessage代替窗口函数处理消息
    
    SysMenuHwnd = GetSystemMenu(Form1.hwnd, False)
    
    Call AppendMenu(SysMenuHwnd, MF_SEPARATOR, 2000, vbNullString)
    Call AppendMenu(SysMenuHwnd, MF_STRING, 2001, "关于本程序(&A)")
    Call AppendMenu(SysMenuHwnd, MF_SEPARATOR, 2002, vbNullString)
    Call AppendMenu(SysMenuHwnd, MF_STRING, 2003, "恢复系统菜单(&R)")
    
End Sub

Private Sub Form_Unload(Cancel As Integer)

    If OldWindowProc <> GetWindowLong(Form1.hwnd, GWL_WNDPROC) Then
        Call SetWindowLong(Form1.hwnd, GWL_WNDPROC, OldWindowProc)
    End If
    
End Sub