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dlg = new CPoolDlg;
m_pMainWnd = dlg;
int nResponse = dlg->DoModal();
delete dlg;
playoff_dlg = new CPlayoffDlg;
m_pMainWnd = playoff_dlg;
nResponse = playoff_dlg->DoModal();
delete playoff_dlg;
That's the code in InitInstance. I have to say I'm in no way a MFC guru. I played with the code a bit to make the CPoolDlg and CPlayoffDlg members of the CMyApp, and had to make them * in order to be able to create them after the common controls initialization is done. If I comment the first dialog out, the second runs wo problems, if I don't, the DoModal returns -1 (from what I know on some message pump checking call)
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search in the MSDN for Q138681
or just comment the m_pMainWnd lines out.
dlg = new CPoolDlg;
int nResponse = dlg->DoModal();
delete dlg;
playoff_dlg = new CPlayoffDlg;
nResponse = playoff_dlg->DoModal();
delete playoff_dlg;
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The problem you have is that you are setting the m_pMainWin to be a pointer to your first dialog.
MFC automatically terminates the thread (your application) when the window that m_pMainWnd is pointing to is closed. For further information see MSDN.
You could change the code to:
dlg = new CPoolDlg;
playoff_dlg = new CPlayoffDlg;
m_pMainWnd = playoff_dlg;
int nResponse = dlg->DoModal();
delete dlg;
nResponse = playoff_dlg->DoModal();
delete playoff_dlg;
Which will ensure that the application lives for the duration of the second dialog.
Ant.
I'm hard, yet soft.
I'm coloured, yet clear.
I'm fruity and sweet.
I'm jelly, what am I? Muse on it further, I shall return! - David Walliams (Little Britain)
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Thank you both guys, it works now
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How should we create 3 Dimensional Graph(Pipe) in VC++ Using MFC?
For example if we give pipe length, breadth, radious How should we draw 3D Pipe?
K.V.K.Naidu
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Hello!
Within a C++ program I need to get the disk quota for all users on a window-machine. I found the IDiskQuotaControl interface, which seems to be the right tool for this task, but I'm not sure how to use it properly (there are no examples in the msdn). Can anyone help me with this?
Thank you very much,
Markus
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std7702 wrote:
I found the IDiskQuotaControl interface...but I'm not sure how to use it properly (there are no examples in the msdn). Can anyone help me with this?
How about:
HRESULT hr;
IDiskQuotaControl *pIDiskQuotaControl;
hr = CoInitialize(NULL);
if (SUCCEEDED(hr))
{
hr = CoCreateInstance(CLSID_DiskQuotaControl, NULL, CLSCTX_INPROC_SERVER, IID_IDiskQuotaControl, (void **) &pIDiskQuotaControl);
if (SUCCEEDED(hr))
{
...
pIDiskQuotaControl->Release();
}
CoUninitialize();
}
"Opinions are neither right nor wrong. I cannot change your opinion of me. I can, however, change what influences your opinion." - David Crow
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This looks good, thank you!
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I am using a modeless dialog box with activex controls. If I remove the activex controls then it is working correctly otherwise it is giving assertion failure error
At the line containing dialogboxname.ShowWindow() function.
Tell me what is wrong.
babu
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If the code is no too long, post the .h and .cpp files from your dialog class. This can help us a lot
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I am using a modeless dialog box with activex controls. If I remove the activex controls then it is working correctly otherwise it is giving assertion failure error
At the line containing dialogboxname.ShowWindow() function.
Tell me what is wrong.
arun
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how to update CFile in vc++.
i want to change data.
(for example)
//existing data
dataid=1
datades=data1
//updating data
dataid=1
datades=dataone
CFile is like as sql have new,delete,update.
i know only create file, read file.
i don't know update file.
vc++ have update file or not.
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The Simplest way to do so is to open the file again and then write your new data. Actually, I always did so in the following way...;P
SOMETYPE SomeFunction()
{
CFile l_File; // local CFile object
l_File.Open( "C:\\FileName.txt",
CFile::modeCreate | CFile::modeReadWrite );
// using the open flags CFile::modeCreate OR CFile::modeReadWrite
// wrting your file by calling CFile::Write()
...
}
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Sir...
my existing create code is following..
void ARMManagementRecords::SaveDomains()
{
// For domains
BOOL bCanSave = FALSE;
UINT nFlags = CFile::typeBinary | CFile::modeWrite;
// file doesn't exist, so create it
if (_access(DATA_FILE_DOMAIN, 0))
{
nFlags |= CFile::modeCreate;
bCanSave = TRUE;
}
else
{
bCanSave = CanSerializeDomain();
}
if (bCanSave)
{
CFile file;
CFileException fe;
// file exists with read & write permissions
if (file.Open(DATA_FILE_DOMAIN, nFlags, &fe))
{
CArchive arDomain(&file, CArchive::store);
//CStringArray m_domainArray;
m_domainArray.Serialize(arDomain);
}
file.Close();
}
}
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does anybody have an idea why c++ would not allow the following:
const char * * cp = NULL;
char * * p = NULL;
cp = p;
i'm getting really disappointed by the language... only intelligent ideas, please!
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because if this would be allowed, you'll be able to modify the const objects.
See:
<br />
const char p1 = 'a';
char* p2;<br />
const char** p3 = &p2;
*p3 = &p1;
*p2 = 'b';
Normally C++ standard allows you to cast from char* to const char* as it only adds the const. But the conversion from char** to const char** is problematic as you can see above.
[example taken from compl.lang.c++]
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//this is tree view class
//CLeftTreeCtrl class
void CLeftTreeCtrl::EditCategory()
{
CAddDlg dlg; //call dialog
dlg.GetDlgItem(IDC_COM1)->EnableWindow(FALSE);
}
when i run my mdi application,it have no error.
but i call dialog, my application is not work.
i don't know.what happen??
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You need to call dlg.DoModal in order to make your dialog appear on the screen. But as DoModal doesn't return until the user close it, you'll need to call GetDlgItem(IDC_COM1)->EnableWindow(FALSE); in the OnInitDialog from your dialog.
Hope this helps...
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-sometime EnableWindow is (FALSE)
-sometime EnableWindow is (TRUE)
how to control this??
OnInitDialog is only one time or not.
onther class is control dialog EnableWindow or not.
//my code
//LeftTreeCtrl.h
void CLeftTreeCtrl::EditCategory()
{
CAddCategoryDlg dlg;
dlg.m_strcom1=cry->m_strCom;
dlg.GetDlgItem(IDC_COM1)->EnableWindow(FALSE);
if (IDOK == dlg.DoModal())
{
//code
}
}
void CLeftTreeCtrl::AddCategory()
{
CAddCategoryDlg dlg;
dlg.m_strcom1=cry->m_strCom;
dlg.GetDlgItem(IDC_COM1)->EnableWindow(TRUE);
if (IDOK == dlg.DoModal())
{
//code
}
}
i wrote this two function.
this is not access.
Other class can not control other dialog class.
please answer me.
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Yes, OnInitDialog is just called once when you call DoModal. But, when you create your dialog again, it is of course called again. If you want to enable or disable your control but without knowing it before, I suggest you to add a member variable to your class dialog (say bEnable for example) and add a member function:
void CYourDialog SetEnabled(BOOL bEn) { bEnabled = bEn; }. So you call this member function before calling DoModal (and after creating your dialog) and then, in OnInitDialog, add this:
...->EnableWindow(bEnabled);
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thank you so much...
working my application..
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Hi..
How to find any control on dialog has changed without tracking setfocus() lostFocus() of each control. As there are too many screens & too many controls on those screens. I just find out, if need for Save on OK Button or not needed.
I'm saving data when user press OK.. I want to check that if user changed something then only I run sql to update otherwise nothing should be done...
Can anybody help me?
Regards
Sumit Kapoor
Never consider anything impossible before trying to solve that..---Sumit Kapoor--- sumit_kapoor1980@hotmail.com
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