Modelless Dialog trouble

[Gldnguppy]

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.

[indiana_pippis]

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

[soundar]

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

[Gldnguppy]

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

[Gldnguppy]

Thank you. That was very helpful.

[Fortran]

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.

[Gldnguppy]

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.

[Chris Richardson]

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