VB制作随机点名程序源码!.doc

VB制作幻灯片随机点名工具大家好，我是丶灬尛坏坏注：此程序适用于 学校班级 实用， 此文是原创，转载请标明出处，本次教程：这个在powerpoint里，完全和powerpoint结合起来，我简单写了一下，新建一个vb程序，在窗体上放一个label,一个timer和一个按钮，timer的interval设置为1，Enable设置为False。源码（不解释，自己研究）：Dim a(0 To 9) As StringPrivate Sub Command1_Click() Timer1.Enabled = Not Timer1.EnabledEnd SubPrivate Sub Form_Load() SetHotkey Me.hwnd, 1, 0, vbKeyHome, Add a(0) = 张三 a(1) = 李四 a(2) = 王五 a(3) = 刘六 a(4) = 牛七 a(5) = 马八 a(6) = 杨九 a(7) = 苟十 a(8) = 朱十一 a(9) = 吕十二End SubPrivate Sub Form_Unload(Cancel As Integer) SetHotkey Me.hwnd, 1, 0, 0, DelEnd SubPrivate Sub Timer1_Timer() Dim i As Integer i = Int(Rnd * 10) Label1.Caption = a(i) Label1.Tag = iEnd Sub新建一个模块，写入以下代码Private Declare Function SetWindowLong Lib user32 Alias SetWindowLongA (ByVal hwnd As Long, ByVal nIndex As Long, ByVal dwNewLong As Long) As LongPrivate Declare Function GetWindowLong Lib user32 Alias GetWindowLongA (ByVal hwnd As Long, ByVal nIndex As Long) As LongPrivate Declare Function CallWindowProc Lib user32 Alias CallWindowProcA (ByVal lpPrevWndFunc As Long, ByVal hwnd As Long, ByVal Msg As Long, ByVal wParam As Long, ByVal lParam As Long) As LongPrivate Declare Function RegisterHotKey Lib user32 (ByVal hwnd As Long, ByVal id As Long, ByVal fskey_Modifiers As Long, ByVal vk As Long) As LongPrivate Declare Function UnregisterHotKey Lib user32 (ByVal hwnd As Long, ByVal id As Long) As LongPublic Declare Function ShowWindow Lib user32 (ByVal hwnd As Long, ByVal nCmdShow As Long) As LongPublic Declare Sub keybd_event Lib user32 (ByVal bVk As Byte, ByVal Scan As Byte, ByVal dwFlags As Long, ByVal dwExtraInfo As Long)Public Declare Function SendMessage Lib user32 Alias SendMessageA (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As LongPublic Declare Function SetForegroundWindow Lib user32 (ByVal hwnd As Long) As LongConst SW_HIDE = 0Const SW_SHOW = 5Const WM_HOTKEY = &H312Const MOD_ALT = &H1Const MOD_CONTROL = &H2Const MOD_SHIFT = &H4Const GWL_WNDPROC = (-4) 窗口函数的地址Dim FormIsShowing As BooleanDim key_preWinProc As Long 用来保存窗口信息Dim key_IsWinAddress As Boolean 是否取得窗口信息的判断Function keyWndproc(ByVal hwnd As Long, ByVal Msg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long If Msg = WM_HOTKEY Then Select Case wParam wParam 值就是 key_idHotKey Case 1 激活 多 个热键后,多 个热键所对应的操作,大家在其他的程序中，只要修改此处就可以了 FormIsShowing = Not FormIsShowing If FormIsShowing Then ShowWindow hwnd, SW_HIDE Else ShowWindow hwnd, SW_SHOW SendMessage hwnd, &H32, 0, 0 SetForegroundWindow hwnd End If Case 2 MsgBox hide ShowWindow hwnd, SW_HIDE End Select End If 将消息传送给指定的窗口 keyWndproc = CallWindowProc(key_preWinProc, hwnd, Msg, wParam, lParam)End FunctionFunction SetHotkey(ByVal hwnd As Long, ByVal KeyId As Long, ByVal keyControlKey As Long, ByVal keyNormalKey As Long, ByVal Action As String) If key_IsWinAddress = False Then 判断是否需要取得窗口信息，如果重复取得,再最后恢复窗口时，将会造成程序死掉 记录原来的window程序地址 key_preWinProc = GetWindowLong(hwnd, GWL_WNDPROC) 用自定义程序代替原来的window程序 SetWindowLong hwnd, GWL_WNDPROC, AddressOf keyWndproc End If Select Case Action Case Add RegisterHotKey hwnd, KeyId, keyControlKey, keyNormalKey 向窗口注册系统热键 key_IsWinAddress = True 不需要再取得窗口信息 Case Del SetWindowLong hwnd, GWL_WNDPROC, key_preWinProc 恢复