How to create domodal dialog box in mfc dynamically?

i have created two dailog box statically.

CParentDailog
CMyDailog 

and then

CParentDailog
{
CMyDailog *l_pdailog;
}

in oninitdailog of CParen开发者_JAVA技巧tDailog ia mdoing

l_pdailog = new CMyDailog();
l_pdailog ->create(ID_DAILG1); // this is id of CMyDailog
l_pdailog ->Domodal(); // crashing at this point

why it is crashing?

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Hi you need to set parent window:

l_pdailog = new CMyDailog(pWndparent);
l_pdailog ->Domodal();