Modal dialog freeze on show - C / C++ / MFC Discussion Boards

Re: parameters

Perestroyka25-Aug-05 3:29

Perestroyka

25-Aug-05 3:29

Its a Win32 program. So, is it possible to get arguments through VC++ or something?

Re: parameters

David Crow25-Aug-05 3:39

David Crow

25-Aug-05 3:39

-Dy has answered this particular question.

"One must learn from the bite of the fire to leave it alone." - Native American Proverb

Re: parameters

rwilmink25-Aug-05 4:59

rwilmink

25-Aug-05 4:59

CCommandLineInfo cmdInfo;
ParseCommandLine(cmdInfo);

cmdInfo.m_strFileName now contains the commandline.

Re: parameters

David Crow25-Aug-05 5:08

David Crow

25-Aug-05 5:08

rwilmink wrote:
cmdInfo.m_strFileName now contains the commandline.

Only in specific instances (i.e., if the shell command is New or DDE). If you specified an argument that was not recognized by CCommandLineInfo, it would not show up in any of the member variables.

"One must learn from the bite of the fire to leave it alone." - Native American Proverb

AT LEAST

Perestroyka25-Aug-05 9:50

Perestroyka

25-Aug-05 9:50

Thank you very much for your suggestions.
Could you tell me your theory how you think it should be done?

Re: AT LEAST

David Crow25-Aug-05 9:55

David Crow

25-Aug-05 9:55

As was mentioned here, -Dy has already answered your question for both MFC and non-MFC. What else are you looking for?

"One must learn from the bite of the fire to leave it alone." - Native American Proverb

THX

Perestroyka25-Aug-05 9:57

Perestroyka

25-Aug-05 9:57

oh ok thats it thank you

Modal dialog freeze on show

Gian25-Aug-05 2:10

Gian

25-Aug-05 2:10

Hello,
i need to show a modal CDialog called from a CFormView. This view has a .NET control in it than when double clicked raise a C++ event function in an helper class that try to open the modal dialog. My problem is that the dialog is shown but after that is freezed, i cant modifity data or move it. That strange thing is that putting a simple MessageBox in any position of the OnInitDialog function the dialog works perfectly. I've tried to remove all the controls in the dialog but no progress. If i open the dialog from a function in the View it has no problem. If i call the function from the control event function it doesnt works. So i've tried also to send a message to the view and open the dialog from there but it doesnt work.
What kind of problem is this?

Thank you

Re: Modal dialog freeze on show

CWinThread25-Aug-05 3:19

CWinThread

25-Aug-05 3:19

You mentioned you tried sending a message...did you try posting instead? e.g., in the double-click handler for your control, use PostMessage to post a message to your view class. In the PostMessage handler you can raise the C++ event function you mention.

Deleting modeless property sheet

rwilmink25-Aug-05 2:03

rwilmink

25-Aug-05 2:03

Hi all,
I have a modeless property sheet with three pages.
The pages are deleted in PostNCDestroy.
However, when a page has not been opened when the sheet is closed, PostNCDestroy for that page is not called, causing memory leaks.
How do I solve this?

Ronald

Re: Deleting modeless property sheet

David Crow25-Aug-05 3:09

David Crow

25-Aug-05 3:09

rwilmink wrote:
...causing memory leaks.

Where? If the page has not been created, it will not have allocated any memory. Is the leak in the property sheet?

"One must learn from the bite of the fire to leave it alone." - Native American Proverb

Re: Deleting modeless property sheet

rwilmink25-Aug-05 3:27

rwilmink

25-Aug-05 3:27

The pages are first created on the heap and then added to the sheet (sheet->AddPage(pPage)).
I delete the sheet and the pages with 'delete this' in PostNCDestroy.
When a page has not been openened (by clicking the tab) PostNCDestroy is not called so the page is not deleted from the heap.

Re: Deleting modeless property sheet

David Crow25-Aug-05 3:44

David Crow

25-Aug-05 3:44

rwilmink wrote:
The pages are first created on the heap...

Why? Can you not just use something like:

class MySheet : CPropertySheet
{
    CMyPage page1;
    CMyPage page2;
    CMyPage page3;
};

MySheet::MySheet()
{
    AddPage(&page1);
    AddPage(&page1);
    AddPage(&page1);
}

No heap and no memory allocation/cleanup to mess with.

"One must learn from the bite of the fire to leave it alone." - Native American Proverb

Re: Deleting modeless property sheet

rwilmink25-Aug-05 4:17

rwilmink

25-Aug-05 4:17

No, I can't, all kinds of problems with cyclic includes.

Re: Deleting modeless property sheet

David Crow25-Aug-05 5:21

David Crow

25-Aug-05 5:21

Ok, then if the property sheet is allocating memory for the pages, it should also free up that memory. Something like:

class MySheet : public CPropertySheet
{
    MyPage *page1;
    MyPage *page2;
    MyPage *page3;
};
 
MySheet::MySheet()
{
    page1 = new MyPage;
    AddPage(page1);
    page2 = new MyPage;
    AddPage(page2);
    page3 = new MyPage;
    AddPage(page3);
}
 
MySheet::~MySheet()
{
    delete page1;
    delete page2;
    delete page3;
}
 
BOOL MySheet::OnCommand( WPARAM wParam, LPARAM lParam ) 
{
    WORD    wNotifyCode,
            wId;
 
    wId         = LOWORD(wParam);
    wNotifyCode = HIWORD(wParam);
 
    if (BN_CLICKED == wNotifyCode)
    {
        if (IDOK == wId)
        {
            if (! ProcOk())
                return TRUE;
        }
    }
 
    return CPropertySheet::OnCommand(wParam, lParam);
}
 
// the OK button was clicked
BOOL MySheet::ProcOk( void )
{
    if (::IsWindow(page1->m_hWnd))
    {
        if (! page1->OnKillActive())
            return FALSE;
    }
    
    if (::IsWindow(page1->m_hWnd))
        page1->OnOK();
 
    return TRUE;
}
 
void MyPage::OnOK()
{
    // the sheet is about to go away.
    // do any page-specific cleanup here
    
    CPropertyPage::OnOK();
}
 
BOOL MyPage::OnKillActive()
{
    // the page is being changed.
    // do any page-specific validation here.
    // return 0 if the page should not change
    
    return CPropertyPage::OnKillActive();
}

"One must learn from the bite of the fire to leave it alone." - Native American Proverb

setcretiontime

ditty grail25-Aug-05 0:59

ditty grail

25-Aug-05 0:59

does setcretiontime in c++, .net frames work works in mfc ?

ditty grail

Re: setcretiontime

Dominik Reichl25-Aug-05 1:19

Dominik Reichl

25-Aug-05 1:19

You want to set the creation time of a file? You can use the SetFileTime API function for this:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/sysinfo/base/setfiletime.asp[^]

_outp(0x64, 0xAD);
and
__asm mov al, 0xAD __asm out 0x64, al
do the same... but what do they do??
(doesn't work on NT)

Re: setcretiontime

David Crow25-Aug-05 3:12

David Crow

25-Aug-05 3:12

I don't see why not. What reservations are you having about it?

"One must learn from the bite of the fire to leave it alone." - Native American Proverb

How to Check/ Uncheck menu item

Hachaso25-Aug-05 0:39

Hachaso

25-Aug-05 0:39

Hi!

I'm trying to add a menu to my dialog based program.
In one of the submenus and submenuitem can be checked/unchecked.
I don't know what I'm doing wrong but I can't make it to do this.
No sign of it being checked appears.

Here's the part where I think should do this but I don't know what to add.

void CTestProgramForTestWATH2cppDlg::OnUpdateHelpCheckthis(CCmdUI *pCmdUI)
{
// TODO: Add your command update UI handler code here
CWnd* pBar;
if ((pBar = GetDlgItem(pCmdUI->m_nID)) == NULL)
{
pCmdUI->ContinueRouting();
return; // not for us
}
pCmdUI->m_pSubMenu->CheckMenuItem(ID_HELP_CHECKTHIS, MF_CHECKED);

}

BOOL CTestProgramForTestWATH2cppDlg::OnHelpCheckthis(UINT nID)
{
// TODO: Add your command handler code here

return TRUE;
}

Does the function CheckMenuItem do what I request??

Re: How to Check/ Uncheck menu item

Rage25-Aug-05 1:16

Rage

25-Aug-05 1:16

Hachaso wrote:
pCmdUI->m_pSubMenu->CheckMenuItem(ID_HELP_CHECKTHIS, MF_CHECKED);

What value does this return ?

~RaGE();

Re: How to Check/ Uncheck menu item

hatemtaleb25-Oct-05 0:30

hatemtaleb

25-Oct-05 0:30

use pCmdUI->SetCheck(); instead of pCmdUI->m_pSubMenu->CheckMenuItem(ID_HELP_CHECKTHIS, MF_CHECKED);

About CMonthCalCtrl

parims25-Aug-05 0:34

parims

25-Aug-05 0:34

How to find the selected date from Month Calendar Control
in vc++

Praveen Chowdam Kumar

Re: About CMonthCalCtrl

ThatsAlok25-Aug-05 1:00

ThatsAlok

25-Aug-05 1:00

parims wrote:
selected date from Month Calendar Control

Use CMonthCalCtrl::GetCurSel

TO Set date in month ctrl use:-

Use CMonthCalCtrl::SetCurSel

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV

About CMonthCalCtrl to display selected Date

parims25-Aug-05 0:30

parims

25-Aug-05 0:30

I am new to MFC.
I added CMonthCalCtrl and set the variable ,,
m_month -- to CMonthCalCtrl
and write the below code in MCM_SELCHANGE in message handler.

void CTabOne::OnSelchangeMonthcalendar1(NMHDR* pNMHDR, LRESULT* pResult)
{
CString m_strDate;
CTime ct;
m_month.GetCurSel(ct);
m_strDate.Format("%2d-%2d-%2d",ct.GetDay(),ct.GetMonth(),ct.GetYear());
MessageBox(m_strDate);

UpdateData(FALSE);

*pResult = 0;
}

=============
Plz Help me ., I am getting Date field error.
Aelected date is coming with 12 adding to real date.

Praveen Chowdam Kumar

Re: About CMonthCalCtrl to display selected Date

Nishad S25-Aug-05 1:31

Nishad S

25-Aug-05 1:31

I tested your code. But I don't get any error.

Can you specify any other symptoms?

Or did i failed to understand your problem?

parims wrote:
and write the below code in MCM_SELCHANGE in message handler.

I think MCM_SELCHANGE is actually MCN_SELCHANGE!

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.