if SendMessage ctrl + a wParam = asc(C) lParam = &h412e0001; //01000001 00101110 00000000 00000001
VB声明 Declare Function SendMessage& Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) Declare Function SendMessageBynum& Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, ByVal lParam As Long) Declare Function SendMessageByString& Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, ByVal lParam As String) 说明 调用一个窗口的窗口函数,将一条消息发给那个窗口。除非消息处理完毕,否则该函数不会返回。SendMessageBynum, SendMessageByString是该函数的“类型安全”声明形式 返回值 Long,由具体的消息决定 参数表 参数 类型及说明 hwnd Long,要接收消息的那个窗口的句柄 wMsg Long,消息的标识符 wParam Long,具体取决于消息 lParam Any,具体取决于消息
wParam = asc(C)
lParam = &h412e0001; //01000001 00101110 00000000 00000001
Declare Function SendMessage& Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any)
Declare Function SendMessageBynum& Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, ByVal lParam As Long)
Declare Function SendMessageByString& Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, ByVal lParam As String)
说明
调用一个窗口的窗口函数,将一条消息发给那个窗口。除非消息处理完毕,否则该函数不会返回。SendMessageBynum, SendMessageByString是该函数的“类型安全”声明形式
返回值
Long,由具体的消息决定
参数表
参数 类型及说明
hwnd Long,要接收消息的那个窗口的句柄
wMsg Long,消息的标识符
wParam Long,具体取决于消息
lParam Any,具体取决于消息