C / C++ / MFC

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Re: Callback function as a class member function Abhi Lahare23-Feb-04 17:42 Abhi Lahare 23-Feb-04 17:42  Hi Hspc, thanks for reply. The link which you have send primarly talks about making the callback function as a static member function of class but what if I want to access the class data members. any pointer to that will be a valuable inputs. Again thanks in advance, Abhishake Re: Callback function as a class member function l a u r e n23-Feb-04 18:29 l a u r e n 23-Feb-04 18:29  the reason it is a static member is obvious if u think about it a little bit ... a callback that u register with the system cannot be duplicated everytime u instantiate a new object of the type ... if it were then which actual function would the system call as the callback? HTH "there is no spoon" biz stuff   about me how to add &quot;script&quot; tag to the html page? benben23-Feb-04 3:20 benben 23-Feb-04 3:20  Hi: I make a programme based on IWebbrowser, and I want to insert a script to the htmlpage loaded by my programme.（the script maybe looks like: ... ）How could I do? I find a article "http://www.codeguru.com/ieprogram/HtmlMemory.html" .It tells us how to modify the content of the SCRIPT,but didn't tell how to add to "SCRIPT" tag to the htmlpage. Thanks Benben Re: how to add &quot;script&quot; tag to the html page? David Crow23-Feb-04 4:05 David Crow 23-Feb-04 4:05  You would add a <script> tag just like you would any other tag. "The pointy end goes in the other man." - Antonio Banderas (Zorro, 1998) Re: how to add &quot;script&quot; tag to the html page? benben23-Feb-04 16:47 benben 23-Feb-04 16:47  Thanks, Could you tell me how to add "script" tag? I try IHtmldocement2::createElement, but it doesn't work? Thanks Benben &amp;255 styve23-Feb-04 3:12 styve 23-Feb-04 3:12  Hi! What does &255 do? I have microseconds in 6 integers, and will place them in a 3 byte unsigned char[3] = {1, 2, 3}; I'm trying to use &255, but it doesn't work so well. Can someone help me with my problem? Re: &amp;255 David Crow23-Feb-04 4:04 David Crow 23-Feb-04 4:04  It's the bitwise AND operator, which in this case, is ANDing with the value 255. "The pointy end goes in the other man." - Antonio Banderas (Zorro, 1998) Using InvalidateRect to force screen update mortishroom23-Feb-04 2:14 mortishroom 23-Feb-04 2:14  Hi! I'm new to programming in VC+++, maybe someone here could help me out.Im using an 'InvalidateRect' in my application's 'OnIdle' message handler and it is returning an error. here is the code : InvalidateRect( hwnd, NULL, TRUE); and the error: hwnd : undeclared identifier hwnd seems to be a pointer to the main window? do I have to define it? Re: Using InvalidateRect to force screen update David Crow23-Feb-04 2:57 David Crow 23-Feb-04 2:57  mortishroom wrote: hwnd seems to be a pointer to the main window? Probably a window handle, rather than a pointer. mortishroom wrote: do I have to define it? Not to pacify the compiler, but it must be declared. At runtime, it must be defined with a valid value. "The pointy end goes in the other man." - Antonio Banderas (Zorro, 1998) Re: Using InvalidateRect to force screen update Prakash Nadar23-Feb-04 3:12 Prakash Nadar 23-Feb-04 3:12  Are you using MFC or win32, The api that you are calling is of win32. For win32 api you need to have a valid window handle to send the notification to. if you are using MFC then first parameter is not required. In win32 you can use IsWindow(HWND) api to check wheather the hWnd is valid or not. Since you say you are biggener, You should check in ur code wheather you are creating any window, if so are you storing the pointer somewhere else. In Windows, The ui are targeted for certain function or api using the windows handle. Simple speaking you need a valide windows handle to call the above api. Hope i clear ur problem. "Fear not of those who can kill the body and not the soul, rather fear Him who can kill both body and soul" - Bible Prakash, India. Re: Using InvalidateRect to force screen update mortishroom23-Feb-04 4:34 mortishroom 23-Feb-04 4:34  Mr.Prakash wrote: Are you using MFC or win32, The api that you are calling is of win32. Im using MFC w/the vc++ mfc app wizard. passing it NULL instead ov hWind worked just fine. thank you. Re: Using InvalidateRect to force screen update Prakash Nadar23-Feb-04 5:24 Prakash Nadar 23-Feb-04 5:24  Strange, dont know how it works, I need to go back to books to understand that. Is it really working the way you are expecting it?? If you dont mind try replaying the NULL with m_hWnd its a predifined window handle in MFC. "Fear not of those who can kill the body and not the soul, rather fear Him who can kill both body and soul" - Bible Prakash, India. Re: Using InvalidateRect to force screen update mortishroom23-Feb-04 7:53 mortishroom 23-Feb-04 7:53  'm_hWnd' gives me an undeclared identifier error. Null is working exactly how i expected; and my code refreshes the screen at 90 million mph, causing everything to flicker uncontrollably. I geuss the next thing i need to learn is about 'frame rate'. Re: Using InvalidateRect to force screen update Robert A. T. Káldy23-Feb-04 11:24 Robert A. T. Káldy 23-Feb-04 11:24  1. If you pass InvalidateRect(NULL, rect), it invalidates all application windows. So I don't wonder, that it flickers. 2. Where are you calling the InvalidateRect from? Generally, in MFC you must retrieve a pointer to redrawn window (CWnd*) and then call CWnd::InvalidateRect(CRect rc, BOOL erase). You needn't to deal with HWND's. Robert-Antonio "CRAY is the only computer, which runs an endless loop in just 4 hours" Re: Using InvalidateRect to force screen update mortishroom23-Feb-04 13:46 mortishroom 23-Feb-04 13:46  a pointer? hmm. thanks for the info - I'll have to look into it next time I get a chance. Re: Using InvalidateRect to force screen update Terry O'Nolley23-Feb-04 12:40 Terry O'Nolley 23-Feb-04 12:40  You can just use this->Invalidate(TRUE); from within the window you want to repaint's loop. Have you answered an MTQ? Check out the stats! What's the latest butt-scratch count? Check it out! Re: Using InvalidateRect to force screen update mortishroom24-Feb-04 13:34 mortishroom 24-Feb-04 13:34  this->Invalidate(TRUE); gives me 'Invalidate' : is not a member of 'CMyApp'. I think I am calling it in the wrong place. how do I access one object's members from another object? Image For a SliderControl Anonymous23-Feb-04 0:22 Anonymous 23-Feb-04 0:22  How can i add a background image for a slidercontrol. Re: Image For a SliderControl Selvam R23-Feb-04 0:33 Selvam R 23-Feb-04 0:33  http://www.codeproject.com/miscctrl/skinnedslidercontrol.asp http://www.codeproject.com/miscctrl/transparentslider.asp Re: Image For a SliderControl Prakash Nadar23-Feb-04 0:37 Prakash Nadar 23-Feb-04 0:37  Check this link out. http://www.codeproject.com/miscctrl/skinnedslidercontrol.asp[^] 1.Why do people not wearing a wrist watch look at their wrist for time when people ask for time. 2.Why do people ask for time from people who are not wearing a wrist watch. Prakash, India. Services Advanced JensB23-Feb-04 0:08 JensB 23-Feb-04 0:08  Hi I'm using SRVANY for using an existing program as Windows service. I have too problems with it. --- First problem:--- I get this error in my windows event viewer 'application'. I only get this error when the service runs, the user logs off and the user logs in the second time. Then something really weird happens (don't know why). I can't navigate using the application's menu. It's like the application has frozen, but this isn't the case neither. I have some sort of scheduler which checks every minute what to do inside the program, and the scheduler runs and quits perfectly. So the program doesn't "freeze". I only get this when the application runs as service on my Windows 2000 computer. I installed it at another PC too and there it works great (same OS). WinXP does the job well too. Error: The COM+ Event System detected a corrupt IEventSubscription object. The COM+ Event System has removed object ID {FAF488EC-AE99-48A8-8550-07AD2EBDDFAE}. The subscriber will no longer be notified when the event occurs. <just edited=""> Before that error, i get this error too: The COM+ Event System failed to fire the Logoff method on subscription {99582471-B2F3-4F46-A30B-4E22AF2E24A4}. The subscriber returned HRESULT 800706BA. There is something that happens on logoff that isn't correct. --- Second problem --- I have read some articles about services which use either the local system account (which has access to local resources and can be interactive) and you can alsoo use it with a domain user which would have access to the netwerk, the ennoying part of the second choice is that the application can not be interactive anymore. The problem is that the application has to be interactive and has to have access to shares. Is the changing of 'Registry: Lanmanserver parameters' the only workaround this? Is it possible to connect to a share with other users' credentials? (given you know his domain user account and his password) so the program uses the credential's of the user instead of the localsystem account. Anyone can help me with this? Greetings, Jens Crash without assert- and access-violation-message Gero Gerber23-Feb-04 0:01 Gero Gerber 23-Feb-04 0:01  Hello there, currently I develop a W2k service with Visual C++ 6. In the last few days this service crashs without an assert- or access-violation-message. Has anybody some experience with this behaviour? Thanks, Gero Re: Crash without assert- and access-violation-message Prakash Nadar23-Feb-04 0:06 Prakash Nadar 23-Feb-04 0:06  It is not neccessarty that you should get an assert or access violation message before it crashes... It could be the logic of the service that is causeing the windows operating system to interminate without notice. One reason could be stack overflow, normally (as to my experience) applications terminate without notice if there is a stack overflow, recurssive function, or infinite loop, etc. 1.Why do people not wearing a wrist watch look at their wrist for time when people ask for time. 2.Why do people ask for time from people who are not wearing a wrist watch. Prakash, India. Re: Crash without assert- and access-violation-message Gero Gerber23-Feb-04 0:09 Gero Gerber 23-Feb-04 0:09  The crash also occured as the application ran in a console window and not as a service. And it also runs in Debug-Mode. So shouldn't be there an error message? Gero Re: Crash without assert- and access-violation-message Prakash Nadar23-Feb-04 0:39 Prakash Nadar 23-Feb-04 0:39  As i told ya it is not always neccessary that there should be a error message, I guess its a serious problem in the code that is causing premuture termination. 1.Why do people not wearing a wrist watch look at their wrist for time when people ask for time. 2.Why do people ask for time from people who are not wearing a wrist watch. Prakash, India.

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