|
Basically, SDI app always has some document created. You have to be tricky if you don't want a document. You can check the "C++ Q & A" column by Paul DiLascia in the November 1996 issue of Microsoft Systems Journal - the author describes the necessary steps.
You can find the article in the MSDN, also online:
http://msdn.microsoft.com/library/periodic/period96/S204D.htm
Cheers
Tomasz Sowinski
|
|
|
|
|
This is how I did it in my app's InitInstance(). (Its an MDI app though):
.
.
.
CCommandLineInfo cmdInfo;
ParseCommandLine(cmdInfo);
//disable LOADING OF A NEW FILE AT STARTUP
cmdInfo.m_nShellCommand = CCommandLineInfo::FileNothing;
// Dispatch commands specified on the command line
if (!ProcessShellCommand(cmdInfo))
return FALSE;
.
.
.
Look up CCommandLineInfo in MSDN for more info
Josh
josh@schroff.com
|
|
|
|
|
I use m_pDesktopFolder->ParseDisplayName(...);
The problem is it works fine when I parse a name from a "real" directory that I created myself named "Spel", but when I try to parse the name of a virtual folder "Den här datorn" (Swedish; aka "My computer" in English) the function fails.
So: How can I get the PID of a virtual folder such as "My computer" with the ParseDisplayName(...); I tried both English and Swedish name of the virtual folder, none works.
Any ideas?
Cheers,
Henrik
|
|
|
|
|
Hi,
I want to make a menu bar like in Internet Explorer, so the user could b able 2 locate the toolBar and the menuBar at the same line.
Does anyone have done it before?
Please help me...
|
|
|
|
|
Hi,
look at the Platform SDK under "User Interface Services/Windows Common Controls/
Common Controls How Tos/Creating an Internet Explorer-Style Menu Bar"
|
|
|
|
|
Hi all!
How can I set the icons for the files in the list ctrl in a CFileDialog?
The files don´t have any icons associated with them and I don´t want that either.
I also would like not to have the file extensions shown.
Thanks,
Daniel
|
|
|
|
|
Hi there!
I am trying to build a Dialog-based application which is much like the Visual C Class Wizard.
I have played around with a CTabCtrl on the dialog box but I haven't had much luck thus far.
Can you give me some hint as to how you would create an application like that?
Also, I was wondering whether instead of dumping a CTabCtrl on my dialog, I could attach a CPropertySheet to my CDialog?
|
|
|
|
|
If it doesn't bother you that the standard buttons of a property sheet are always there use it.
If you do - like I do in my dialog-based-application now - you have to use the CTabCtrl.
The difference is that you have to create a dialog for each rider of the tab. The tab itself
is just a container. So by selecting the riders of a tab you just call up a user-defined dialog.
- Put a tab (like
IDC_TAB1) in your dialog (CMyDialog) with the dialog editor
- Open the Class-Wizard and attach a CTabCtrl-Member-Variable (like
MyTabCtrl) to your tab-resource (IDC_TAB1)
- Then you have to tell your tab about the number of riders and their names (with a
TC_ITEM structure)
BOOL CMyDialog::OnInitDialog()<br>
{
CDialog::OnInitDialog();
<br> TC_ITEM TabCtrlItem;
TabCtrlItem.mask = TCIF_TEXT;
<br> TabCtrlItem.pszText = "Name of the Rider 1"
MyTabCtrl.InsertItem(0, &TabCtrlItem);
<br> TabCtrlItem.pszText = "Name of the Rider 2"
MyTabCtrl.InsertItem(1, &TabCtrlItem);
<br> TabCtrlItem.pszText = "Name of the Rider 3"
MyTabCtrl.InsertItem(2, &TabCtrlItem);
}
- Derive a dialog-class (like
CMyFirstRiderDialog) from CDialog
- You should create another dialog resource (like
IDD_MY_FIRST_RIDER) that represents the content of your rider
- In the function
void CMyDialog::OnShowWindow(BOOL bShow, UINT nStatus)
you'll have to create your rider-dialog.
void CMyDialog::OnShowWindow(BOOL bShow, UINT nStatus)
{
CDialog::OnShowWindow(bShow, nStatus)
<br> if(bShow)
{
MyFirstRiderDialog->Create(IDD_MY_FIRST_RIDER, MyTabCtrl.GetActiveWindow());
MyFirstRiderDialog->ShowWindow(SW_SHOW);
}
}
- In the Message Handler of your
TCN_SELCHANGE and TCN_SELCHANGING message of your IDC_TAB1 object
you have to destroy your MyFirstRiderDialog and create the dialog dedicated to your other tabs.
void MyDialog::OnSelchangingZone(NMHDR* pNMHDR, LRESULT* pResult)
{
switch(MyTabCtrl.GetCurSelection())
{
case 0:
CMyFirstRiderDialog->DestroyWindow();
break;
<br> case 1:
CMySecondRiderDialog->DestroyWindow();
break;
<br> default:
ASSERT(0);
break:
}
}
void MyDialog::OnSelchangZone(NMHDR* pNMHDR, LRESULT* pResult)
{
switch(MyTabCtrl.GetCurSelection())
{
case 0:
MyFirstRiderDialog->Create(IDD_MY_FIRST_RIDER, MyTabCtrl.GetActiveWindow());
break;
<br> case 1:
MySecondRiderDialog->Create(IDD_MY_SECOND_RIDER, MyTabCtrl.GetActiveWindow());
break;
<br> default:
ASSERT(0);
break:
}
}
I think with this you can find the missing links in the VC-manual.
Manfred
---
Programming is knowing...
|
|
|
|
|
Ok, I'm a beginning MFC user so I'm probably just doing something stupid...
Anyway, I added class members for my list boxes using the Class Wizard window. Anytime I try to do anything with them in the OnInitDialog() function I get an assertion error because I think my list box members aren't initialized or something. Is there anything i have to know about using them? Do I have to do a data exchange before I use them or something, or somehow initialize them?
|
|
|
|
|
You must call DoDataExchange() once to hook up your member variable to the control. CDialog::OnInitDialog() does this, so put your code after the base class function call.
--Mike--
http://home.inreach.com/mdunn/
The Signature, back by popular demand: Buffy. Pajamas.
|
|
|
|
|
Hi there,
I was wondering how you create an application that has a little icon on the
bottom right hand side...kind of like Real Player or McAfee or so many other
application that have that little icon in the bottom right hand side of Windows,
which you can click to launch the application dialog.
thanks
|
|
|
|
|
Hello, the codegurus around the world. 
Check Master Chris Maunder's code.
http://www.codeproject.com/shell/systemtray.asp
(Acutally, I'm looking for the codegurus web site, but I couldn't find his code.  )
I remembered that he posted his code at codegurus about two and half years ago.
He commented in those days that he can't believe that some company gets the money
from this kind of codes.
Have a nice day!
-Masaaki Onishi-
|
|
|
|
|
Hello,
I got a small problem (or rather question)...
global:
-------
SHGetDesktopFolder(&m_pShellFolder)
// the nFolde value can be diffrent,, also CSIDL_DESKTOP.. depends what button user press
SHGetSpecialFolderLocation(NULL, nFolder, &m_ppidl);
func:
-----
IShellFolder* pFolder;
IEnumIDList* pEnumIds;
if (::GetSize(m_ppidl) == 2)
{
// if the user is in the root path (desktop folder) do this...
m_pShellFolder->EnumObjects(NULL, SHCONTF_FOLDERS | SHCONTF_NONFOLDERS, &pEnumIds);
pFolder = m_pShellFolder;
pFolder->AddRef();
}
else
{
// if the user is in a folder that is BELOW the desktop do this.... the pidl is
// a full path list in both cases (ie it holds the desktop id as first entry)
m_pShellFolder->BindToObject(m_ppidl, NULL, IID_IShellFolder, (LPVOID *)&pFolder);
pFolder->EnumObjects(NULL, SHCONTF_FOLDERS | SHCONTF_NONFOLDERS, &pEnumIds);
}
// after this the enumaration process starts and I use pFolder->GetAttributesOf
// and pFolder->GetDisplayNameOf...
.
.
.
pFolder->Release();
I got this code. Anyway as you might notice I do pFolder = m_pShellFolder.
My question is, can this be dangerous when I do pFolder->Release(); since both pointers point at the same memloc...?
(SIDENOTE)
If GetSize returns 2 I assume that the pidl tells you that your in the root (DESKTOP)
else your in a subfolder to the root
, my code is supposed to add to the pidl list as the user goes down in the folder structure..
(THE QUESTOIN  )
So my question is, as I said, is it safe to do pFolder = m_pShellFolder; and then release pFolder later with pFolder->Release()?..
Will this destroy m_pShellFolder (or make it unusable) (it worked tough i dunno if its safe?)?
What im trying to accomplish is basicly to get a copy of the m_pShellFolder structure(the one it points at) to a new IShellFolder object..
I hope someone understood this
Cheers,
Henrik
|
|
|
|
|
You're doing exactly what you should be doing. Calling AddRef() tells the underlying COM object that there is a new reference to it. Just remember to call Release() through both pointers to properly clean up.
--Mike--
http://home.inreach.com/mdunn/
The Signature, back by popular demand: Buffy. Pajamas.
|
|
|
|
|
Does anybody know of any good examples of how to use Visual C++ to program an Add-In for the Visual Basic IDE? In VB, you'd add references to the MS Office and VB Extensibility models in the reference dialog, then add the line
Implements IDTExtensibility to your 'Connect' class. Fairly straight forward. How can I do this using Visual C++?
Thanks in advance for any help.
Jamie Nordmeyer
Portland, Oregon, USA
|
|
|
|
|
there a book on ado in vc? (not vb)
|
|
|
|
|
Check out "Visual C++ 6 Database Programming Tutorial by Wendy Sarrett, ISBN 1861002416.
More detail on Wrox's website at http://www.wrox.com/Books/Book_Details.asp?sub_section=1&isbn=1861002416&subject=C%2B%2B%2FVC%2B%2B%2FC%23&subject_id=3
Hope this helps...
TEF
|
|
|
|
|
www.informit.com
online book called "Sams Teach Yourself Database programming with Visual C++ in 21 days" or something like that is available there...
Get ready for lots of cursing at those VB programmers with their full automation support...
couple of MSDN articles are essential here:
"Visual C++ ADO Programming" in ADO Appendices
"Using Visual C++ Extensions" in "
|
|
|
|
|
In my current project I have to run a procedure at a specific time during the night. For this I am using the "SetWaitableTimer" function (see code below).
This code runs perfectly on a Win2K machine. But on a Win98 machine, it looses 3 Seconds per minute. ie. If I start it at 12 Midday to run at 12 Midnight (12 Hours difference) then the scheduler will run 36 Minutes late.
Any help at all would be usefull.
Joe.
[Code]
HANDLE hScheduleTimer;
bool CCashierLogon::StartScheduler()
{
...
hScheduleTimer = CreateWaitableTimer(NULL, FALSE, NULL);
if (hScheduleTimer != NULL)
{
SYSTEMTIME sysSch; //24/Apr/2001 00:00:00
sysSch.wYear = 2001;
sysSch.wMonth = 4;
sysSch.wDay = 24;
sysSch.wDayOfWeek = 0; //Ignore
sysSch.wHour = 0;
sysSch.wMinute = 0;
sysSch.wSecond = 0;
sysSch.wMilliseconds = 0; //Ignore
FILETIME ftSch, ftUTC;
LARGE_INTEGER liSch;
SystemTimeToFileTime(&sysSch, &ftSch);
LocalFileTimeToFileTime(&ftSch, &ftUTC);
liSch.LowPart = ftUTC.dwLowDateTime;
liSch.HighPart = ftUTC.dwHighDateTime;
long lPeriod = (1000 * 60 * 60 * 24); //Every 24 Hours
if (SetWaitableTimer(hScheduleTimer, &liSch, lPeriod, NULL, NULL, FALSE) == TRUE)
{
CWinThread *pSchThread;
pSchThread = AfxBeginThread(MainScheduler, //Function Name
(PVOID)hScheduleTimer, //Handle
THREAD_PRIORITY_NORMAL, //Normal
0, //Stack Size
CREATE_SUSPENDED); //Create Suspended
pSchThread->m_bAutoDelete = FALSE;
pSchThread->ResumeThread();
}
}
...
}
UINT MainScheduler(LPVOID pParam)
{
HANDLE hSchedule;
hSchedule = (HANDLE)pParam;
while(1)
{
if (WaitForSingleObject(hSchedule, INFINITE) == WAIT_OBJECT_0)
{
//
//Do Our Midnight Processing Here...
//
}
}
return 0;
}
|
|
|
|
|
Hi:
When I run the my program in one computer it gives an error saying Unhandeld exception in ... :0xC0000005 Access Violation, but suprisingly, the program works fine in two other computers?
Please help if you know how to handle the problem, I really appreciate your comments.
thank-you
|
|
|
|
|
Assuming its a release mode app and you can't debug on the machine in question, one thing that can help is to create a map file when you compile (see the Link tab of the project settings). Once you have a map, you may be able to identify the function (though not the line) of your code where the crash is happening from the address given in the message, and this can be helpful.
Could be data related - a string that is fine on some machines/data sets is NULL on the problem machine, and code is not checking it before passing it to strlen etc.
Check http://support.microsoft.com/support/kb/articles/Q196/7/55.ASP for more info.
|
|
|
|
|
I wrote the following code in my app. It works fine but a bunch of warning messages
are bugging the hell out of me. All the books that I consulted declare map like this.
Any help to get rid of these obnoxious warnings is much appreciated. Thanks.
class Product
{
........
}
int main()
{
Product Pen("Pen", 5.99, 58);
Product Lamp("Lamp", 28.49, 24);
Product Speaker("Speaker", 24.95, 40);
map<std::string, product=""> productMap;
productMap[Pen.getName()] = Pen;
productMap[Lamp.getName()] = Lamp;
productMap[Speaker.getName()] = Speaker;
return 0;
}
The WARNING messages
--------------------
c:\program files\microsoft visual studio\vc98\include\xtree(118) : warning C4786: 'std::_Tree<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::pair<std::basic_string<char,std::char_traits<char>,std::allocator<char> > const ,
Product>,std::map<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,Product,std::less<std::basic_string<char,std::char_traits<char>,std::allocator<char> > >,std::allocator<product> >::_Kfn,std::less<std::basic_string<char,std::cha
r_traits<char>,std::allocator<char> > >,std::allocator<product> >' : identifier was truncated to '255' characters in the debug information
c:\program files\microsoft visual studio\vc98\include\map(46) : see reference to class template instantiation 'std::_Tree<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::pair<std::basic_string<char,std::char_traits<
char>,std::allocator<char> > const ,Product>,std::map<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,Product,std::less<std::basic_string<char,std::char_traits<char>,std::allocator<char> > >,std::allocator<product> >::_Kfn,std::
less<std::basic_string<char,std::char_traits<char>,std::allocator<char> > >,std::allocator<product> >' being compiled
C:\C++ Practice\map\map14.cpp(50) : see reference to class template instantiation 'std::map<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,Product,std::less<std::basic_string<char,std::char_traits<char>,std::allocator<c
har> > >,std::allocator<product> >' being compiled
|
|
|
|
|
The warning about >255 identifiers is a known problem with STL. You can safely ignore or disable that warning.
--Mike--
http://home.inreach.com/mdunn/
The Signature, back by popular demand: Buffy. Pajamas.
|
|
|
|
|
how can you disable that?
I got a same error with this code:
#include <windows.h>
#include <conio.h>
#include <string>
#include <deque>
using namespace std;
int main()
{
deque<string> lines;
return 0;
}
|
|
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
