The following is a dialog interface function called

 void ShowDlg (void)//display dialog 
{
AFX_MANAGE_STATE (AfxGetStaticModuleState ()); 
CtestDlg CDLG;//definition used to test the dialog 
Int b=CDLG. DoModal ();//normal display dialog 
Driver DLG.//dialog variables (Driver is my own definition dialog class name) 
//AfxEnableControlContainer (); 
Int a=0; 
A=DLG. DoModal ();//dialog box does not display the 
} 

CtestDlg is my new test dialog 1, can display the
normalDriver, I formally to use dialog, one loaded OCX controls, cannot show
After debugging, I found the difference between the two is test dialog 1 in CDLG. DoModal will call DoDataExchange function (), and the load control dialog 2 won't call, it should also be the cause of the latter can not display properly, is this why?

CodePudding user response:

Your Dll call AfxOleInit (); Class yet? InitInstance function calls, such as the App AfxOleInit ();

CodePudding user response:

Checked the online, others said in the engineering of InitInstance () function to add AfxEnableControlContainer (), I had been added, but the execution of DLG. DoModal (); When melt

CodePudding user response:

reference 1st floor VisualEleven response:

your Dll call AfxOleInit (); Class yet? InitInstance function calls, such as the App AfxOleInit ();

Call, this is program automatically add, and I also added a AfxEnableControlContainer (), the following

 BOOL CMy840DApp: : InitInstance () 
{
CWinApp: : InitInstance (); 
AfxOleInit (); 
AfxEnableControlContainer (); 

return TRUE; 
} 

CodePudding user response:

Any call CoInitialize ()?

CodePudding user response:

reference 4 floor VisualEleven response:

any call CoInitialize ()?

no