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* reinterpret_cast<bb *>(xx) = * reinterpret_cast<bb *>(yy);
Bomb our homes and threaten our children, and, as difficult as it is, we will still love you --- Martin Luther King, Jr.
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Thank's, but sometimes i don't know the real type of xx and yy, and i dont want to know.
I don't write this code with a switch.
Other idea ?
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Can operators even be virtual? You certainly can't make = virtual, because = always operates on a object, not a pointer to an object, as is required for polymorphism.
--Mike--
http://home.inreach.com/mdunn/
Help! Help! I'm being repressed!!
your with and
Sonork - 100.10414 AcidHelm
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Hello experts,
Well,I have a VC++ 6.0 developed application, supporting MBCS, which is the default for VC++ 6.0. Also, let me tell you I am using Windows 2000 platform.
Then, I have compiled it with UNICODE MFC dlls and static librarys[ UAFX*.lib and Unicode MFC dlls] and got the UNICODE version of application.
Now, my requirement is to develop one single application that can support both Unicode and MBCS[DBCS]....
Well, I dont know wehether this is possible, if Possible, please let me know how to go for.
Thanks & Regards,
Mr Prasad G.
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While I'm not an expert, I will try to answer your question.
Use the TCHAR macro's for all your string manipulations (CString does this)
ie.
use 'TCHAR' instead of 'char' or 'WCHAR'
use '_tcscpy' instead of 'strcpy', '_mbscpy', or 'wcscpy'
HTH
---
It may be that your sole purpose in life is simply to serve as a warning to others.
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I wrote database program,and my m_pSet(recordset) is snapshot and I can use AddNew() function;when I change m_nDefaultType to dynaset I can't use AddNew() and when I use CanAppend() it does not append!
How can I add a new record to dynaset record?
thanks
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You only can set the type of recordset in the openrecordset. Is for this that the only way is close the recordset an open again, using a dynaset type...
Cheers!!!
Carlos Antollini.
Sonork ID 100.10529 cantollini
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Hi !
I have an app using the Doc-View architecture.
In my View class, I have a method GetDocument().
I would like to be able to access the document from my mainApp class, not from the view. GetDocument() is using the member property m_pDocument, but I cannot use it from my mainApp class. How can I get a pointer to my CDocument class from my App class ?
Thanks for your help !
Jerome
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Hello!
How do I get those nice blue/white buttons and dropdown menus that most XP applications use in my MFC app?
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Hi, All !!!
=======
Last time I asked: How to grayscale a picture, and didn't got an answer.
Well...
If you guys wanna know how, there is your answer:
I found out that in order to have a gray color,
all Red,Green & Blue must have the same value.
So...
<code>void</code> GrayscaleIt(MyPicture & pic)
{
for (<code>int</code> y=0; y<pic.height; y++)
for (<code>int</code> x=0; x<pic.width; x++)
{
<code>COLORREF</code> col= pic.GetPixel(x,y);
<code>unsigned char</code> gs= ((GetRValue(col)+GetGValue(col)+GetBValue(col))/3);
pic.SetPixel(x,y, RGB(gs,gs,gs));
}
}
BTW:
I have a question.
After the win32 AppWizard, In order to make my window "transparent" or "hollow",
I need to change the wcex.hbrBackground to 0 ;
Like this:
ATOM MyRegisterClass(HINSTANCE hInstance)
{
WNDCLASSEX wcex;
wcex.cbSize = sizeof(WNDCLASSEX);
wcex.style = 0;
wcex.lpfnWndProc = (WNDPROC)WndProc;
wcex.cbClsExtra = 0;
wcex.cbWndExtra = 0;
wcex.hInstance = hInstance;
wcex.hIcon = LoadIcon(hInstance, (LPCTSTR)IDI_GRAY1);
wcex.hCursor = LoadCursor(NULL, IDC_ARROW);
<code> wcex.hbrBackground = NULL;
wcex.lpszMenuName = NULL;
wcex.lpszClassName = szWindowClass;
wcex.hIconSm = LoadIcon(wcex.hInstance, (LPCTSTR)IDI_SMALL);
return RegisterClassEx(&wcex);
}
How do I do it in MFC ?????
Please, HELP!
BTW: come to #CodeProject on DalNet (mIRC)
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Take a look at PreCreateWindow, which you can override in your CMainFrame class.
Regards,
Alvaro
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Call AfxRegisterWndClass() and save the returned string. Use that string as your window class name.
--Mike--
http://home.inreach.com/mdunn/
Help! Help! I'm being repressed!!
your with and
Sonork - 100.10414 AcidHelm
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(Visual C++6.0 on OS w2k)
I have the following problem using standard microsoft ActiveX MSComm32 or others:
when I create this object and I run my application in
debug mode there is always a COleException raised:
Warning:_ constructing COleException,
scode=DIPS_E_MEMBERNOTFOUND ($80020003).
I create the object as below:
CString csLicKey = "Copyright (c) 1994 ";
BSTR bstrLicKey = csLicKey.AllocSysString();
if(!m_CommCtrl.Create("Communications Control",
WS_CHILD, CRect(0,0,40,40), this, IDC_COMMCTRL, NULL,
FALSE, bstrLicKey))
I couldn't trap this exception. And I couldn't discover
why it was raised.
Someone knows something about this issue?
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Assuming you mean DISP_E_MEMBERNOTFOUND and not DIPS_E_MEMBERNOTFOUND.
MSDN states the following,
Debugging Output You Can Safely Ignore
When you're debugging a control, you may get a series of messages in Visual C++'s debugging window. Although it's not documented anywhere, some of these messages can be safely ignored. For instance, when I debug the StopLite control in the test container using Visual C++ version 4.2, I get the following:
Loaded symbols for 'C:\WINNT35\system32\MFC42.DLL'
LDR: WARNING ! MAJOR PERFORMANCE LOSS in TSTCON32.EXE
LDR: Dll MFC42D.DLL base 5f400000 relocated due to collision with
C:\WINNT35\System32\MFC42.DLL
Loaded symbols for 'C:\WINNT35\system32\MFC42D.DLL'
Loaded symbols for 'C:\WINNT35\system32\MSVCRTD.DLL'
Loaded symbols for 'C:\WINNT35\system32\MFCO42D.DLL'
Warning: constructing COleException, scode = DISP_E_MEMBERNOTFOUND ($80020003).
First-chance exception in TSTCON32.EXE (MFCO42D.DLL): 0xE06D7363: Microsoft C++ Exception.
The first line is just notification that the debugging symbols for the release version MFC DLL were loaded when the test container, which uses the release version of the MFC DLL, was loaded.
The second and third lines (which begin with "LDR:") warn that the debugging version of the MFC DLL (used by the StopLite control) had to be relocated in my address space because it conflicted with the release version of the same DLL (which is being used by the test container). Although this means that it took a little longer to load the MFC DLL, it isn't a big deal because it only happens when you're debugging in the test container. You can ignore these messages. (Since Visual Basic apps don't use the MFC DLL at all, you won't get this message if you use a Visual Basic app as your test container.)
The next three lines are notifications that debugging symbols have been loaded.
The last two lines are notification that an exception has been thrown because the test container didn't provide a Color property to be read. This is okay, because we've provided a default value for the property. You won't get this error if you use a container that provides the property, such as a Visual Basic application.
In Visual C++ version 4.1, the only line I got was a warning about the exception for properties that couldn't be loaded from the container.
First-chance exception in TSTCON32.EXE (MFC40.DLL): 0xE06D7363: Microsoft C++ Exception.
Depending on how your container handles threads, you may also get occasional messages about threads exiting. You don't need to worry about these, either.
Michael
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how do you print ? with the doc / view architecture or somehow different ?
OnPrepareDC (CDC* pDC, CPrintInfo* pInfo)
{
..
DEVMODE* pDevMOde = pInfo->m_pPD->GetDevMode();
pDevMode->dmOrientation = DMORIENT_LANDSCAPE;
pDC->ResetDC (pDevMode);
}
This would be the approach for the doc / view arch. if you use another way, post the code...
hope this helps..
bernhard
"There are three roads to ruin: women, gambling and technicians. The most pleasant is with women, the quickest is with gambling, but the surest is with technicians." Georges Pompidou
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I'm an experimented developper (I believe I am) but I'm a bit lost.
I want to create a Internet Explorer PlugIn but when I open the new project dialog, I don't know what to choose. It's very embarrasing .
FYI, I want to put some buttons and a listbox.
How can I force the user to install it when he opens the page?
Can I create a Dialog application with automation server? Does that work?
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Hi,
I'm wondering if it is possible to 'push' a thread to execute more often when another thread is waiting for some data from the first one?
The concret case is the following: My application created a secondary thread for displaying data. The main thread modifies that data and to avoid displaying wrong data I use flags.
When the secondary thread is busy, the first one waits until the security flag is reset. Depending on the compiler options the results are different: for 'standard optimization' there is no problem, but for 'speed optimized' the main thread waits forever because somehow the secondary thread doesn't continue... ??
Can someone help ??
Thanks
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You can increase the thread priority SetThreadPriority in MSDN
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Set the priority to THREAD_PRIORITY_HIGHEST or even THREAD_PRIORITY_TIME_CRITICAL, do your stuff and then put it back to THREAD_PRIORITY_NORMAL
Nish
Sonork ID 100.9786 voidmain
www.busterboy.org
If you don't find me on CP, I'll be at Bob's HungOut
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Have you declared the flag variable as volatile ? If you didn't, the compiler doesn't know it may be changed in another thread, and can optimize away checks for its value.
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When you say a "flag" do you mean a bool variable? If so, then that is the wrong way to synchronize threads. Use a critical section instead. See InitializeCriticalSection() and related APIs.
--Mike--
http://home.inreach.com/mdunn/
Help! Help! I'm being repressed!!
your with and
Sonork - 100.10414 AcidHelm
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Thanks for all your replies.
It's right, I forgot to specify the flag as 'volatile'. Without this even when increasing the other thread's priority it wouldn't have worked.
But I didn't use a critical section... I'll try to implement it in future
cheers
Marc
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