Thank you very much for your answers. I'll try it again. if there is any error, could you help me again? May I have your Emaill for contact in the future? my Emaill: hailuolan@yahoo.com.cn :) it's my pleasure to make friend with you.

First, thank you very much for your help. You said "free the library after creating a modless dialog". Beacuse I do not understand the dll, and for some resons, i have to use it with modless dialog. So, could you help me to edit the codes, and make the program run freely. Finally, thanks. it's my pleasure to make friend with you.

my function in dll: extern "C" _declspec(dllexport) CDialog * ShowDllDlg(HWND hWnd) { AFX_MANAGE_STATE(AfxGetStaticModuleState()); CDllDlg * m_pDlg =new CDllDlg(); m_pDlg->Create(IDD_DLG_DllDLG, CWnd::FromHandle(hWnd)); m_pDlg->ShowWindow(SW_SHOW); return m_pDlg; } Another function to call dll function in my test project: void CTestDlg::OnBnClickedButtonDlltest() { HWND myhWnd = this->m_hWnd; typedef CDialog * (_stdcall *Connect)(HWND hWnd); HINSTANCE hinstDLL=NULL; hinstDLL = ::LoadLibrary("AntiSubmarine.dll"); if (hinstDLL) { Connect Proc; Proc = (Connect)GetProcAddress(hinstDLL,"ShowDllDlg"); if (Proc!=(Connect)NULL) { m_pdlg = (CDialog *)Proc(myhWnd);//in *.h file defines CDialog * m_pdlg; //if only "Proc(myhWnd)", also the same error; } FreeLibrary(hinstDLL); } else { AfxMessageBox("Not found dll !"); } return; } when run the dll, error comes out.

modified on Wednesday, August 19, 2009 8:47 AM