Private Declare Function SendMessage Lib "user32" _
Alias "SendMessageA" (ByVal hWnd As Long, ByVal wMsg _
As Long, ByVal wParam As Long, ByVal lParam As Long) _
As Long
Const WM_SYSCOMMAND = &H112&
Const SC_SCREENSAVE = &HF140&
代码:
'将段代码放在点击鼠标的事件中
Dim result As Long
result = SendMessage(Form1.hWnd, WM_SYSCOMMAND, SC_SCREENSAVE, 0&)
我这段程序调出“滚动字幕”屏保,如果你要调出机器当前的屏保,我想你要在程序中读取注册表查查!
Private Declare Function ShellExecute Lib "shell32.dll" Alias "ShellExecuteA" (ByVal hwnd As Long, ByVal lpOperation As String, ByVal lpFile As String, ByVal lpParameters As String, ByVal lpDirectory As String, ByVal nShowCmd As Long) As Long
Private Sub Command1_Click()
Dim ret As Long
ret = ShellExecute(Me.hwnd, "open", "c:\windows\system\滚动字幕.scr", "", "", 1)
End Sub
sendmessage的定义错了
Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long