Question

VB SHELLEXECUTE 参数讲解

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

谢谢了

Answer 1

ShellExecute
分别参考了：
http://baike.baidu.com/view/1044533.htm
ShellExecute函数原型及参数含义如下：
ShellExecute(
hWnd: HWND; {指定父窗口句柄}
Operation: PChar; {指定动作, 譬如: open、print}
FileName: PChar; {指定要打开的文件或程序}
Parameters: PChar; {给要打开的程序指定参数; 如果打开的是文件这里应该是 nil}
Directory: PChar; {缺省目录}
ShowCmd: Integer {打开选项}
): HINST; {执行成功会返回应用程序句柄; 如果这个值 <= 32, 表示执行错误}
//返回值可能的错误有: = 0 {内存不足}
ERROR_FILE_NOT_FOUND = 2; {文件名错误}
ERROR_PATH_NOT_FOUND = 3; {路径名错误}
ERROR_BAD_FORMAT = 11; {EXE 文件无效}
SE_ERR_SHARE = 26; {发生共享错误}
SE_ERR_ASSOCINCOMPLETE = 27; {文件名不完全或无效}
SE_ERR_DDETIMEOUT = 28; {超时}
SE_ERR_DDEFAIL = 29; {DDE 事务失败}
SE_ERR_DDEBUSY = 30; {正在处理其他 DDE 事务而不能完成该 DDE 事务}
SE_ERR_NOASSOC = 31; {没有相关联的应用程序}
//ShowCmd 参数可选值:SW_HIDE = 0; {隐藏}
SW_SHOWNORMAL = 1; {用最近的大小和位置显示, 激活}
SW_NORMAL = 1; {同 SW_SHOWNORMAL}
SW_SHOWMINIMIZED = 2; {最小化, 激活}
SW_SHOWMAXIMIZED = 3; {最大化, 激活}
SW_MAXIMIZE = 3; {同 SW_SHOWMAXIMIZED}
SW_SHOWNOACTIVATE = 4; {用最近的大小和位置显示, 不激活}
SW_SHOW = 5; {同 SW_SHOWNORMAL}
SW_MINIMIZE = 6; {最小化, 不激活}
SW_SHOWMINNOACTIVE = 7; {同 SW_MINIMIZE}
SW_SHOWNA = 8; {同 SW_SHOWNOACTIVATE}
SW_RESTORE = 9; {同 SW_SHOWNORMAL}
SW_SHOWDEFAULT = 10; {同 SW_SHOWNORMAL}
SW_MAX = 10; {同 SW_SHOWNORMAL}

http://support.microsoft.com/kb/224816
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

例子：

Private Sub Command1_Click()
Dim r As Long
r = ShellExecute(0, "open", "http://www.microsoft.com", 0, 0, 1)
End Sub