Modelless Dialog trouble

I am trying to create and use some modelless dialogs in my dialog based project. I can't seem to get it to work although I am following MSDN exactly (as far as I know). This is what I am doing to try to get a modelless dialog to appear:

CTestDlg testdlg;
testdlg.Create(IDD_TESTDLG, NULL);
testdlg.ShowWindow(SW_SHOW);

But it doesnt show up. It looks as if it pops up and immediately closes before I can really see it.
Please help.

you must use a pointer

CTestDlg *testdlg;

testdlg=new(CTestDlg);
testdlg->Create(IDD_TESTDLG, NULL);
testdlg->ShowWindow(SW_SHOW);



because when you exit from the function that call Create() and ShowWindow() the object testdlg is destroied.
If you don't want use a pointer you must declare CTestDlg testdlg; as public variable

hi,
u cannot create Dialog like that. U should be use pointer.

CTestDlg *testdlg; //put it into class

{
testdlg=new CTestDlg;
testdlg->Create(IDD_TESTDLG, NULL);
testdlg->ShowWindow(SW_SHOW);
}

Regards,
soundar

Ahha. That makes sense. I should have known. Thanks alot.

Thank you. That was very helpful.

Hi;

There's nothing wrong with doing that, but *I think* you'll have a memory leak since you are using the 'new' command. It probably won't cause any major problems, but, nonetheless. You should probably declare a variable m_MyModlessDlg as part of the calling class, that way you can properly destroy the Modeless Dialog.

Scott.

Now that you mention it, you are probably right about the memory leak thing. I will go about it your way. Thanks for the help. I appreciate it.

Or (and some disagree), you could override OnNcDestroy() and call:


delete this;




Just a thought so the dialog will manage it's own deletion.

Chris