Can anyone help with load Property Sheet and Page that lives in DLL

[CMFC6.0User]

I am trying to build a project that loads a Property Sheet and only one page (because of the trouble I am having here) that is in a dll.
The exe is just a MFC dialog app w/ default dialog class cut out and I insert loaded pSheet from Dll takes over.

I tried a CDialog in a dll and loaded similar to what I am doing here and it worked.

The problem is that everything works fine untill I call CPropertySheet:oModal() thur dlg->DoModal();
in CLoaderApp::InitInstance() and I get a ASSERT(pTemplate != NULL) in CPropertyPage::PreProcessPageTemplate()
because the Dialog Templete for property Page(pTemplate) equals NULL.

I cannot say why I need this loading of a pSheet, but I need to.



my code...


In my DLL I have SheetDlg.h

class CSheetDlg : public CPropertySheet
{
...

CDllDlg m_DllDlg;
CSheetDlg() : CPropertySheet()
{
Construct("SheetDlg", NULL);
AddPage(&m_DllDlg);
}
...
};


__declspec(dllexpott) CSheetDlg SheetDlg;


////////////////

In my exe I have Loader.cpp

BOOL CLoaderApp::InitInstance()
{
...
MainDllInstance = ::LoadLibrary("Dll.dll");

if(MainDllInstance != NULL)
{
dlg = (SheetDlg*)GetProcAddress(MainDllInstance, "SheetDlg");
}

m_pMainWnd = dlg;
int nResponse = dlg->DoModal();
if (nResponse == IDOK)
{
// TODO: Place code here to handle when the dialog is
// dismissed with OK
}
else if (nResponse == IDCANCEL)
{
// TODO: Place code here to handle when the dialog is
// dismissed with Cancel
}

FreeLibrary(MainDllInstance);
...
}


////////////////

An ASSERT() is false CPropertyPage::PreProcessPageTemplate() in mfc
because ::FindResource(psp.hInstance,...)(below)(I think) is not able to find IDD_LOADDLL_DIALOG
because it is looking in my exe resouces and not my dll resouces.

void CPropertyPage::PreProcessPageTemplate(PROPSHEETPAGE& psp, BOOL bWizard)
{
const DLGTEMPLATE* pTemplate;

if (psp.dwFlags & PSP_DLGINDIRECT)
{
pTemplate = psp.pResource;
}
else
{
HRSRC hResource = ::FindResource(psp.hInstance,
psp.pszTemplate, RT_DIALOG);
HGLOBAL hTemplate = LoadResource(psp.hInstance,
hResource);
pTemplate = (LPCDLGTEMPLATE)LockResource(hTemplate);
}

error-> ASSERT(pTemplate != NULL);// pTemplate does equal NULL
...
}


////////////////

Here the Call stack

CPropertyPage::PreProcessPageTemplate(_PROPSHEETPAGEA & {...}, int 0) line 201 + 25 bytes
CPropertySheet::BuildPropPageArray() line 955
CPropertySheet:oModal() line 779
CLoaderApp::InitInstance()
...
////////////////

I there a way to point to the right resorce?


Thanks...

Real World Coding:
POP& BuyAPop(Money ADollar){...};

[igbrus]

1. dlg = (SheetDlg*)GetProcAddress(MainDllInstance, "SheetDlg"); is absolutely wrong statement

dlgCreate = ( SheetDlg routine pointer )GetProcAddress(MainDllInstance, "SheetDlg");
dlg = dlgCreate();
2. Did you put
AFX_MANAGE_STATE(AfxGetStaticModuleState( ));
at SheetDlg

Rating isn't important...But gurus respect it and keep high

[CMFC6.0User]

<i>dlg = (SheetDlg*)GetProcAddress(MainDllInstance, "SheetDlg"); is absolutely wrong statement</i>

should have been
dlg = (CSheetDlg*)GetProcAddress(MainDllInstance, "SheetDlg");

<i>AFX_MANAGE_STATE(AfxGetStaticModuleState( ));</i>

Where should I put AFX_MANAGE_STATE() in my dll.

And should I be using SheetDlg.DoModal() in a export dll function instead of my exe

Real World Coding:
POP& BuyAPop(Money ADollar){...};

[igbrus]

You should put AFX... before sheetdlg construction. I guess you use new. Yes, move DoModal to the DLL seems better

Rating isn't important...But gurus respect it and keep high

[CMFC6.0User]

Also the dll is an extension dll and MSDN said I can put AFX_MANAGE_STATE(AfxGetModuleState( )); or maybe it was AFX_MANAGE_STATE(AfxGetAppModuleState( )); in a WndProc() but using MFC Message maps.

Any help.

Real World Coding:
POP& BuyAPop(Money ADollar){...};

[igbrus]

For extension DLL you shouldn't use GetProcAddress and AFX_M.... You should directly export your class and use AfxGet/SetResourceHandle.
If you wish to use GetProcAddress, use regular MFC DLL instead of extension

Rating isn't important...But gurus respect it and keep high

[CMFC6.0User]

I'll try AfxGet/SetResourceHandle() then move to reg dll if not.

Real World Coding:
POP& BuyAPop(Money ADollar){...};

[apurv146]

Hello,

Is any one found solution for this problem? If found then can you pls send me the sample code?

Thanks in Advance!