为什么用SendMessage给按钮发送WM_COMMAND消息后 按钮没有响应？？

Question

void CMyDlg::OnButton1() 
{
// TODO: Add your control notification handler code here
GetDlgItem(IDC_BUTTON2)->SendMessage(WM_COMMAND,MAKEWPARAM(BN_CLICKED,IDC_BUTTON2),0); 
}void CMyDlg::OnButton2() 
{
// TODO: Add your control notification handler code here
MessageBox("2");
}

Answer 1

::SendMessage(m_hWnd,WM_COMMAND,MAKEWPARAM(IDC_BUTTON2,BN_CLICKED),0); 

Answer 2

或者SendMessage(WM_COMMAND,MAKEWPARAM(IDC_BUTTON2,BN_CLICKED),0); 

Answer 3

SendMessage(WM_COMMAND,((WPARAM)BN_CLICKED)<<8|(WPARAM)IDC_BUTTON,0L);   

Answer 4

按钮的click消息通常是发给父窗口处理的，按钮本身并不处理这种消息

Answer 5

::SendMessage(GetDlgItem(IDC_BUTTON2)->GetSafeHwnd(),WM_LBUTTONDOWN,0,0);   

Answer 6

GetDlgItem(IDC_BUTTON2)->SendMessage(BM_CLICK, 0, 0);

Answer 7

汗 我把句柄 搞混了
void CMyDlg::OnButton1() 
{
// TODO: Add your control notification handler code here
::SendMessage(m_hWnd,WM_COMMAND,MAKEWPARAM(IDC_BUTTON2,BN_CLICKED),0); 
}void CMyDlg::OnButton2() 
{
// TODO: Add your control notification handler code here
MessageBox("2");
}

Answer 8

在同一个对话框类中要发什么消息啊，直接调用OnButtoh2不就行了，另外上面有人说了WM_COMMAND是按钮发给父窗口的，你就是想冒充别的按钮，接收消息的也应该是父窗口啊