Example 17 : SendMessage & PostMessage

Resource Editor

• Dialog : IDC_SENDMESSAGE, IDC_POSTMESSAGE

CMainFrame

void CMainFrame::OnForCalldialog()
{
	CTestDialog dlg;
 
	dlg.DoModal();
}
 
void CMainFrame::OnForTest()
{
	AfxMessageBox("I Received Message.");
}

CTestDialog

void CTestDialog::OnBnClickedPostmessage()
{
	CWnd *pWnd = AfxGetMainWnd();
	pWnd->PostMessage(WM_COMMAND, ID_FOR_TEST);
	CDialog::OnOK();
}
 
void CTestDialog::OnBnClickedSendmessage()
{
	CWnd *pWnd = AfxGetMainWnd();
	pWnd->SendMessage(WM_COMMAND, ID_FOR_TEST);
	CDialog::OnOK();
}