Problem with a CPropertyPage object

[Hansi]

Hello I have a big problem with dialog. I construct the dialog then I use CPropertyPage

CameraSetup pCameraSetup = new CCameraSetup[MAX_CAMS];
UINT rgID[MAX_CAMS] = {IDS_CAMERA1, IDS_CAMERA2};
CPropertySheet dlgPropertySheet(AFX_IDS_APP_TITLE);
dlgPropertySheet.AddPage(&pCameraSetup[0]);
dlgPropertySheet.AddPage(&pCameraSetup[1]);
for (ULONG i = 1; i <= MAX_CAMS; i++)
{
pCameraSetup[i-1].Construct(rgID[i-1]);
}
dlgPropertySheet.DoModal();




definition of the CCameraSetup:


class CCameraSetup : public CPropertyPage;




By doing DoModal I receive always an Debug Assertion failed in dlgprop.cpp in line 201.

This is the section:


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);
}

ASSERT(pTemplate != NULL); --->Error




This is happen only when I will give to my Tabs a name (in this case with Construct(..)).
Can anyone help me??

Thanks a lot!

[Emi]

Hi,

Change your code with thisfor (ULONG i = 0; i < MAX_CAMS; i++)
{
pCameraSetup[ i ].Construct(rgID[ i ]);
}



Regards,

Emi.

[Emi]

Sorry it's the same...
Where do you receive the assertion in your program? At wich line in that code?

Regards,

Emi.

[Hansi]

I receive the asertion when I do DoModal(). Then inside the function PreProcessPageTemplate(...) there is the problem that pTemplate is NULL.

I hope this is the information that you need.

Thanks for your help!

[Emi]

CPropertySheet dlgPropertySheet(AFX_IDS_APP_TITLE);


This (AFX_IDS_APP_TITLE) is your caption ID property?
Try withCPropertySheet dlgPropertySheet("my property sheet");

and see what it happens.

Regards,

Emi.

[Hansi]

It is the name of the tab-dilog box.

I have tested with "my property sheet" and it is happen the same thing.
Thanks a lot!

[Emi]

One moreCPropertySheet dlgPropertySheet(MAKEINTRESOURCE(AFX_IDS_APP_TITLE));



Regards,

Emi.

[Hansi]

Now I receive a Debug assertion error already into to line with CPropertySheet dlgPropertySheet(...)

(file strcore.cpp, line 344)

CPropertySheet::CPropertySheet(LPCTSTR pszCaption, CWnd* pParentWnd,
UINT iSelectPage)
{
ASSERT(pszCaption != NULL);

m_strCaption = pszCaption; ----> here is happend (pszCaption is a NULL pointer
CommonConstruct(pParentWnd, iSelectPage);
}

[Marina Vaillant]

Did you get any solution now?? (ok that was 5 years ago)
I have the same first problem, but trying to use modeless Property Sheet.
One of my page causes this assertion failure... pTemplate is NULL. I don't understand why.

I transformed a Dialog box into a CPropertypage derived class. I changed the properties of the Dialog box to Child window, disabled, and thin border.
Should I change more than that?? all code that was CDialog:: is now CPropertyPage::

Marina

[Marina Vaillant]

My problem was solved :
When transforming my CDialog into a CPropertyPage, I forgot to change the page constructor.

Marina

[JohnCz]

Hansi,

Property page Construct member takes property page dialog template as first parameter (either UINT or pointer to a string).

It is unclear from your code what exactly you are doing.
If you create array of the property pages, of the same class type, I assume that this class is based on one property page dialog template.

In call to Construct, you are passing different IDs for property page template. That is where I do not see consistency.

Most likely you are passing ID of the template that does not exist, ergo assert.