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toxcct wrote: dumb boys...
I see no reason to resort to name-calling. If you don't agree with his practices, simply press the "ignore" button.
"A good athlete is the result of a good and worthy opponent." - David Crow
"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne
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http://www.warpspeed.com.au/cgi-bin/inf2html.cmd?..%5Chtml%5Cbook%5CIBMVACPP%5CCPPLNG.INF+184
Though no example but made clear points of how function-style cast behaves in C++.
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Hi : D.
I'm running XP SP2 and Visual C++ 6 SP 6. I'm very curious about why this behavior occurs. If I call this function while I'm debugging, it works!
ExitWindowsEx(EWX_POWEROFF, 0);
But if I run the debug-built or even release-built executables from my hard disk, it does't work! Why!? This is very strange. From the debbuger, the computer starts shut down procedure, but otherwise, no way.
Thank you...
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Hm. Found my own answer in the meantime. Apparently, the VC++ IDE has administrator privileges. If you're a little program like me, check this out:
http://msdn2.microsoft.com/en-us/library/aa376868.aspx (see SE_SHUTDOWN_NAME)
http://msdn2.microsoft.com/en-us/library/aa375202.aspx
...and for a nice example...
http://msdn2.microsoft.com/en-us/library/aa376871.aspx
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Privileges, mon ami, privileges (I suppose...)! 
MSDN [^] states
To shut down or restart the system, the calling process must use the AdjustTokenPrivileges function to enable the SE_SHUTDOWN_NAME privilege. For more information, see Running with Special Privileges.
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.
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We replied in the same time : D.
Thank you anyway! Appreciated.
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You hadn't to read the OP.
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.
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Hi!
I m working on a database project in which i use CDaoDatabase class of MFC
to create the connection with a Access .mdb file by using its open()
function. and then use CDaoQueryDef class to save the query in the database.
It works well when I run my program first time for a database but if I
select the another or same Access .mdb file without closing the exe of my project it give error in its open
function. the error msg is somthing like this-> Unhandled exception in
myProject.exe(DAO360.DLL):0xc0000005:Access violation.
Pls help me to solve this problem as early as possible.
Ansh
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Maybe try wrapping methods that can throw exceptions in try/catch blocks.
Then you can get detailed error info.
try
{
...try database open
}
catch (CDaoException *e)
{
... examine exception/error info here
e->Delete();
}
*EDIT* Besides checking for exceptions - are the string pointers you pass to Open() valid?<br />
(Thanks Steve!)
Mark
-- modified at 1:41 Friday 6th July, 2007
Mark Salsbery
Microsoft MVP - Visual C++
"Go that way, really fast. If something gets in your way, turn."
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It looks like the exception was an access violation and so your code will not catch it.
Steve
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Thanks 
Mark Salsbery
Microsoft MVP - Visual C++
"Go that way, really fast. If something gets in your way, turn."
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i use try wrapping method bt it unale to track the error.
Acctually wn i debug my program and track all steps then i watch that wn the open function of CDaoDatabase class is called like this->
void CDaoDatabase::Open(LPCTSTR lpszName, BOOL bExclusive,
BOOL bReadOnly, LPCTSTR lpszConnect)
{
----
----
DAO_CHECK(m_pWorkspace->m_pDAOWorkspace->OpenDatabase(
V_BSTR(&var),
COleVariant((long)bExclusive, VT_BOOL),
COleVariant((long)bReadOnly, VT_BOOL),
COleVariant(lpszConnect, VT_BSTRT),
&m_pDAODatabase));
}
and wn the function DAO_CHECK is called it through the exceptions.
Ansh
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What are the values and contents of lpszName and lpszConnect?
Mark
This episode brought to you by the number 5
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lpszName the path of the mdb file is displayed and the lpszConnect stores 0.
Ansh
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aaaan wrote: and the lpszConnect stores 0
I'm not sure a NULL pointer is allowed there.
Instead of 0, try passing _T("")
Mark
This episode brought to you by the number 5
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I have a buffer of LPBYTE type. How can I generate JPEG file from this bufer?
Mainly I need the information that must be written to the JPEG file.
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What is the format of the data in your buffer? If it's already a JPG file you simply need to write out its contents. If it's not already a JPG you'll need to convert it. You haven't given enough information for more detailed instructions.
Steve
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I have no JPEG image. I want to create a new JPEG image.
I have a buffer containing core data.
/// Code
LPBYTE m_pPhotoBuffer;
m_pPhotoBuffer = new BYTE[height*width*3];
memcpy(m_pPhotoBuffer,(LPBYTE)lParam, height*width*3);
////
Now I have a camera recieved data in m_pPhotoBuffer.
I want to create a fresh JPEG file from this data.
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Please refer here[^] for more information on JPEG.
As I understand that you received input bytes from camera, so it must be raw bytes that is pixel data (Red, Green and Blue). As JPEG file format is the compressed file format, you first need to compress your data with JPEG standard.
Regards,
Paresh.
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Hello,
In my one-doc/multi-view program, one of the views is the print preview view. Normally, it will response to the user's Esc stroke, I want to disable this behavior. How should I do?
Thanks in advance.
Max
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also u can use your own printprew.i've seen the CView::OnFilePrintPreview() which is not complicable.
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I'm not familiar with hook technics. Would you please give me more details,
or, if possible, a sample program or a segment of code show this method?
Thanks for your help.
Max
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For instance, you can override PreTranslateMessage method.
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.
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