知道窗体frm的句柄,使用SendMessge 向他发送 WM_Actived消息,但frm_active事件并没有触发,是什么原因。
Public Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
Public Const WM_ACTIVATE = &H6
语句大概是:
SendMessage frm.hwnd,WM_ACTIVATE,0,0请问什么原因,谢谢
Public Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
Public Const WM_ACTIVATE = &H6
语句大概是:
SendMessage frm.hwnd,WM_ACTIVATE,0,0请问什么原因,谢谢
前几天,说的那个反馈CBN_SELCHANGE
我用别的语言可以实现,但VB却不行,郁闷