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hy, i have written an exe and a dll. the exe uses a class in the dll.
in this dll- class i have some CString members. now, when i debug i see the
following: in the constructor, everything is fine, all strings got initialized and have valid adresses. now in a subsequent functioncall, every
CString Member has the adress 0x000000 except the one who was first declared in the class. i have no idea, what the problem could be!
has it something todo with the dll?
please help me!!
thanx
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Sounds like it is an IDE feature, not C++ design.
Kuphryn
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hy, sorry, i do not understand your answer at all, could you please explain?
thanx, greetz
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I am saying the problem is with Visual C++ debugger, not your application.
Kuphryn
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hy, i dont think the problem is the debugger,or how could this be?
what am i doing wrong? im working with visual c++ since 2 years now, and never experienced a similar problem. how can i solve the problem?
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Probably you are doing something like this: (normally more complicated, but the same thing)
CString *p = NULL;
p->Trim();
Calling a method on a NULL pointer may cause the problem you're describing.
Trying to make bits uncopyable is like trying to make water not wet.
-- Bruce Schneier
By the way, dog_spawn isn't a nickname - it is my name with an underscore instead of a space. -- dog_spawn
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I think that you don't get the point of what he is asking. I think that he wants to know WHY the subsquents aren't initialized. You are only showing the effect of it, but I think he is AAAARGH-ing about the not-being-constructed of the CString-members in his class.
And btw, I have no idea what he could be doing wrong. This is really weird... a member var should be constructed if it shouldn't be a pointer but a physical instance...
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I have been using GetOpenFileName for quite some time in many programs to open files. However, I have not found a way to select what "view" style is used with the Open File Dialog appears such as "Thumbnail", "Filmstrip"...so on.
Is there a way of pulling up the Open File dialog and defaulting that dialog to be one of the views such as "Thumbnail"?
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Hi,
I would like to get the source code for an Editor (in VC++), with Auto-complete feature,and syntax highlighting, just like what we have in Visual Studio. pl. send me the URLs / Project name, if you have come across any thing like that in the net b'for.
Thanks in Advance
Jagadeesh
"A robust program is resistant to errors -- it either works correctly, or it does not work at all; whereas a fault tolerant program must actually recover from errors."
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You could try looking at "Crystal Edit" and "Brainchild", for syntax coloring, at codeproject. As for Auto-complete, you may what to search www.sourceforge.net.
INTP
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Just found this "Using Scintilla for syntax coloring in MFC" at codeproject.
The article recomends going to www.scintilla.org for information on regular expressions, auto-complete, etc...
Good Luck!
INTP
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I have created a program in VC++(MFC programming) using ListCtrl and MSFlexGrid control(This both have pasted in separate Views). I want to move the focus from ListCtrl to MSFlexGrid control and vice versa. Will anyone help me how to set the focus from List control to MSFlexGrid control.
Ramanan.
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You need the a handle to both the items in one place and them simply say SetFocus.
I Touched Osama Bin Ladens Bushy Beard
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Have you tried the SetFocus() member functions for their respective CWnd-derived control wrappers?
i dont think MsFlexGrid has a CWnd derived wrapper, so you could simply send it a WM_SETFOCUS msg.
HTH
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How can I read the file size and based on the size an action will be triggered?
C++/VC++
Any help will be greatly appreciated
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Getting file length:-
DWORD length;
CFile file;
file.Open ("c:\\myfile.dat", CFile::modeRead | CFile::shareDenyNone );
length = file.GetLength (); // Will give you the file length.
Simple... isn't it ?
Regards,
Jijo.
Yesterday is history,
Tomorrow is a mystery,
But today is a present.
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Are you looking to execute your code if file size is changed by some other user or application ??
greatest thing is to do wot others think you cant suhredayan@omniquad.com
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When the file gets to certain size I will run another application
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Is it possible to grab a certain pixel's color using WM messages?
If so, which WM should I send and what kind of wParam and lParam would I need to send?
Thanks,
~Mike
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you can use GetPixel
COLORREF GetPixel(<br />
HDC hdc,
int nXPos,
int nYPos
);
why do you need SendMessage ?
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Because I need to retrieve pixel colors from an inactive window..
Is it possible?
Thanks
~Mike
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__Cerb wrote:
Is it possible?
not sure...
an inactive window isn't drawn!! .. needs to get the wm_paint to be redrawn..
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What about ::GetDC(HWND hwnd) and ::ScreenToClient(HWND hwnd, LPPOINT lpPoint)
???
is there a way I could use those to get a pixel color?
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Do I need to use ::GetDC, ::GetWindowDC, ::ScreenToClient, ::BitBlt, I really need to figure out how can I retrieve a pixel color from an inactive window.
Thanks a lot, any help greatly appreciated
~Cerb
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