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You can't do this from RING3 (user-mode) code. You need to create a device driver to get hardware access.
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Do you know if there's a driver with api I can use?
I don't even know how to code such a hw-driver on my own!
Greetings, Jan
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I was created Toolbar by using CToolBarCtrl. I was Implemented in MDI App.
I was implemented Enable the Toolbar once if Textbox is Selected.(ON_UPDATE_UI)How to set the disable state Even if there is no child windows in MDI App?
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is there something like CDM_GETFOLDERPATH but in SET version?
t!
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My visual studio is messing me about. Every time I try and switch to a different file in the IDE, the system hangs for about 8-12 seconds before switching over to it. It also sometimes happens when I go to modify the file.
I have Visual Sourcesafe running for the porject in question with the DB on our server. I don't think its a problem at that end as all the other developers in the office are not having the same problem.
Anybody got any ideas on what could be the problem?
Roger Allen
Sonork 100.10016
Were you different as a kid? Did you ever say "Ooohhh, shiny red" even once? - Paul Watson 11-February-2003
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VC++ 6.0 ?
This may happen if you have many breakpoints in your project.
Edit->Breakpoints->Remove All and press OK.
may solve your problem.
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You know, I read that and I thought, No way! But I checked and there was a breakpoint problem. Somehow VS had got confused and the same breakpoint was listed about 300 times!.
I removed them all and it seems to be going much faster.
Thanks!
Roger Allen
Sonork 100.10016
Were you different as a kid? Did you ever say "Ooohhh, shiny red" even once? - Paul Watson 11-February-2003
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Excute a class as a thread
Class name: CTest
i was thinking of something like this:
AfxBeginThread(CTest, THREAD_PRIORITY_NORMAL);
but it gives the error:
error C2275: 'CTest': illegal use of this type as an expression
if i can't excute a class what does this mean:
CWinThread* AfxBeginThread( CRuntimeClass* pThreadClass, int nPriority = THREAD_PRIORITY_NORMAL, UINT nStackSize = 0, DWORD dwCreateFlags = 0, LPSECURITY_ATTRIBUTES lpSecurityAttrs = NULL );
(source: MSDN)
[]D [] []D []
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There's two ways of using AfxBeginThread:
Either you call if for a thread procedure, declared as
UINT MyThreadProc(LPVOID lParam)
{
...
}
or you use it by providing a class derived from CWinThread as first parameter.
While the former is used as a worker thread, that means doing some stuff, the latter is usually used for gui tasks.
You should have a look at MSDN to get more information about that.
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The class must be derived from CWinThread and must override the method
BOOL CreateThread(DWORD, UINT, LPSECURITY_ATTRIBUTES);
and when passing the runtime class of class use the macro RUNTIME_CLASS(classname)
much better, unless you really need it, use the AfxBeginThread() to execute a function and pass the class object's pointer as the function's parameter.
if you have VC++.Net then read these links in the msdn
ms-help://MS.VSCC/MS.MSDNVS/vccore/html/_core_Multithreading.3a_.Creating_Worker_Threads.htm
ms-help://MS.VSCC/MS.MSDNVS/vccore/html/_core_Multithreading.3a_.Creating_User.2d.Interface_Threads.htm
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First of all I am a usual VisualC++ developer, the problem which I am discussing is out of my hands.
While I was developing program in Visual Studio 6.0, I got erorr within the IDE that 'CANNOT EXECUTE PROGRAM'. I am getting this ERROR in the start of BUILD, what I mean that the VisualC++ compiler doesnot look for any syntax or file inclusion error, it simply spits out 'CANNOT EXECUTE PROGRAM'.
I have done my every effort from executing the VCVAR32.BAT to installing/uninstalling the VisualC++ also the VisualStudio IDE, but I am getting this problem continously.
Please anyone have any idea, how to solve this problem related to VisualC++ 6.0 or Visual Studio 6.0 
Dammy More
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Hi,
I am looking for the ultimate book on MFC...
any ideas?
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Prosise - Programming Windows with MFC
My opinions may have changed, but not the fact that I am right.
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hello all,
I have a little problem 
i want to detect if the result of operation is exact :
for(int i=0;i<400;i++)
{
Pixel[i] = GetPixel(dc,CursorX,CursorY);
CursorX++;
if ((i / 20) == ???
}
if i==20, i get an exact result, if i==40....
you know how can i detect this ??
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if (i%20==0){ }
Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo
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thx you !
the modulo of course !
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You need to test whether your division delivers a remainder of value 0.
So you can either use the % operator, which returns 0 when an division succeeded without remainder. The second possibility is using div, returning a struct of type div_t containing the remainder, too.
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thx for your answer
Schlaubi wrote:
So you can either use the % operator
this solution is perfect.
i don't need the result, i need only to know if the result is exact.
thx
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I work on a program that involves zooming areas under the mouse cursor from the desktop window.
I capture the DC of the desktop using GetDesktopWindow() and GetWindowDC(). The problem is that when their exist a transparent window (WS_EX_LAYERED and any alpha level less than 255) under the cursor, the window does not appear in the DC and instead the windows below it appear as if does not exit.
Below is general view of my code:
<br />
HDC hDeskDC;<br />
HWND hDeskTop = GetDesktopWindow();<br />
hDeskDC = GetWindowDC(hDeskTop);<br />
HDC hTempDC;<br />
<br />
hTempDC = GetDC(hWnd);<br />
<br />
StretchBlt(hTempDC, 0, 0, 49, 49, hDeskDC, point.x - 3, point.y - 3, 7, 7, SRCCOPY);<br />
.<br />
.<br />
.<br />
ReleaseDC(hDeskTop, hDeskDC);<br />
I need to know how to get the desktop DC including any transparent windows on it. Some programs do it like the Accessability Magnifier comes with Win2k and WinXP.
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I need to solve a strange problem. I need to open a file for reading&writing,
keep it open and read it by another application.
I made it under VCE (C++ for WCE) and it works. The excerpt of code is as follows:
CFile m_TheFile;
BOOL m_bIsOpen;
// Creates a File for writing and sharing readings
m_bIsOpen = m_TheFile.Open("C:MYFILE.txt", CFile::modeCreate | CFile::modeReadWrite | CFile::shareDenyWrite , &m_ex);
// Last parameter must be null in VCE
// m_bIsOpen = TRUE (VCE & VC++)
CFile TheFile;
BOOL bIsOpen;
// THIS WORKS in VCE -> I can Open and Read the file but not in VC++
bIsOpen = TheFile.Open("C:MYFILE.txt", CFile::modeRead , &m_ex);
// Last parameter must be null in VCE; bIsOpen = TRUE (VCE)
// bIsOpen = FALSE (VC++)!!!! WHY???
// Error during access to C:MYFILE.txt///////////////////////////////////
Can someone tell me the explanation or a solution to this problem?
MANY THANKS
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Is it simply that the current directory is not where "C:MYFILE.txt" is located??
Neville Franks, Author of ED for Windows. www.getsoft.com
Make money with our new Affilate program
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Unfortunately not! I can read it if I skip the first reding operation.
There has to be something stupid under it or something else more complicated!
Anyway I sent the code to your email address so as you can examine it if you want. THANKS
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In the second Open add shareDenyNone. ie. CFile::modeRead | CFile::shareDenyNone Also check the CFileException.m_cause and see what it complains about.
FYI I didn't receive any email from you.
Neville Franks, Author of ED for Windows. www.getsoft.com
Make money with our new Affilate program
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