C / C++ / MFC

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Double Buffering in SDI hntay26-Feb-04 6:57 hntay 26-Feb-04 6:57  Hi, I have tried looking at the examples available here but they don't seem to work for me. I have a SDI project on the go and I have a drawing window on the top right corner that I would like refreshed periodically. I want to double buffer it and this is what I have so far in my CDoubleBufferView::OnPaint() CRect tempRect; GetClientRect(tempRect); //rect of the window CPaintDC dc(this); CBitmap bitmap; CDC dcMem; if(m_isDoubleBuffered) { if( dcMem.CreateCompatibleDC( &dc ) ) { bitmap.CreateCompatibleBitmap(&dc, tempRect.Width(), tempRect.Height() ); CBitmap* pOldBitmap = dcMem.SelectObject(&bitmap); dcMem.FillSolidRect(tempRect, dc.GetBkColor()); Draw(dcMem); dc.BitBlt( tempRect.left, tempRect.top, tempRect.Width(), tempRect.Height(), &dcMem, tempRect.left, tempRect.top, SRCCOPY ); dc.SetTextColor(RGB(255, 255, 255)); dc.SetBkMode(TRANSPARENT); dc.SetTextAlign(TA_LEFT | TA_TOP); dc.TextOut(m_dwTopLeft.x, m_dwTopLeft.y, "Double Buffer"); } } else { Draw(dc); dc.SetTextColor(RGB(255, 255, 255)); dc.SetBkMode(TRANSPARENT); dc.SetTextAlign(TA_LEFT | TA_TOP); dc.TextOut(m_dwTopLeft.x, m_dwTopLeft.y, "No Double Buffer"); } I do not see any difference in either mode. Did I miss something. Btw, I am still new with MFC, thus if a more detailed explanation can be provided, it would be greatly appreciated. Thanks in advance. Re: Double Buffering in SDI alex.barylski26-Feb-04 15:03 alex.barylski 26-Feb-04 15:03  Not the answer your looking, but just as effective and only like 2 lines of code. Why don't you use Keith Rules CMemDC...it's sweet Cheers The word of the day is legs, let's go back to my house and spread the word SetDlgItemText Problem Caoimh26-Feb-04 5:42 Caoimh 26-Feb-04 5:42  I've got to Dialogs (DialogA & DialogB). DialogA has an edit box which I want to write to. DialogB consists of a few BUTTONS, when the user clicks one of these buttons I need a message to appear in the edit box of DialogA. Would some detail how this might be done using the following APIs GetDlgItemText SetDlgItemText Kind Regards Caoimh Re: SetDlgItemText Problem Prakash Nadar26-Feb-04 5:46 Prakash Nadar 26-Feb-04 5:46  Very simple, get the pointer of dialogA in dialogB, then in the eventhandler of the button in dialogB do the following pDlg1->SetDlgItemText(IDC_XXX,"Text"); I have lost more blood shaving than on the battlefield - Adolf Hitler Programming in C++ with .NET Jerome Conus26-Feb-04 5:33 Jerome Conus 26-Feb-04 5:33  Hi ! I'm thinking about buying Visual Studio .NET. I've heard and read many things regarding .NET and the need for the people using my application to have the CRT if it's not already installed on their machine. My question is : is this true only for C# applications ? If I'm developping an app in C++ with .NET, will I get a executable which won't need the CRT ? Will my app work for example on Win98 ? Since which version of Windows is the CRT automatically installed ? Thanks for your infos, Jerome Re: Programming in C++ with .NET Michael P Butler26-Feb-04 5:48 Michael P Butler 26-Feb-04 5:48  Visual C++ in VS.NET is the only tool that will generate native Win32 code. Therefore you don't need to distribute the .NET runtime (unless you use the .NET managed C++ classes) Michael But you know when the truth is told, That you can get what you want or you can just get old, Your're going to kick off before you even get halfway through. When will you realise... Vienna waits for you? - "The Stranger," Billy Joel Autolist member option in VStudio 6 Jerome Conus26-Feb-04 5:30 Jerome Conus 26-Feb-04 5:30  Hi ! I'm having a problem wih the autolist member option. Me and my coworkers are working on the same projet. I have on my disk a visual studio workspace, which includes 4 projects. My coworkers have _exactly_ the same configuration. My problem : I want to have the autolist member when I type a class name, which is a class from the other project in the same workspace. It works for my coworkers (the list of member variables and methods) appears in the text editor, but not with me. I checked the options of Visual Studio and autolist member option is set. Could anyone tell me what's wrong with my configuration ? Thanks ! Jerome Re: Autolist member option in VStudio 6 Prakash Nadar26-Feb-04 5:43 Prakash Nadar 26-Feb-04 5:43  There is nothing wrong in the configurarion, it is due to currupt .opt .clw files in your workspace directory... Try deleting the .opt file (after closing ur workspace) and then load ur workspace in the visual studio. I have lost more blood shaving than on the battlefield - Adolf Hitler Multiple language Scozturk26-Feb-04 5:30 Scozturk 26-Feb-04 5:30  Hi! Is there any easy way to make your application to be multilanguage? What can be used for it? I want to let the user choose if he or she wants english french or german.... Well... I am a beginner ... Re: Multiple language Prakash Nadar26-Feb-04 5:40 Prakash Nadar 26-Feb-04 5:40  yeah certainly, You need to create resource only dll, this resource dll will contain all the messeage in the local language. during application load time, load the appropriate dll to display appropriate language messages. I have lost more blood shaving than on the battlefield - Adolf Hitler F1 key for other thing than help! avallet26-Feb-04 5:16 avallet 26-Feb-04 5:16  Hi everybody! I think evrything is in the title... I write a dialog based application, and I need to use the F1 key. But I don't want to see a message box asking me where the help file is! How is it possible to tell my dialog box F1 is a key like others? Thanks! Re: F1 key for other thing than help! Prakash Nadar26-Feb-04 5:27 Prakash Nadar 26-Feb-04 5:27  Handle WM_HELPINFO event. I have lost more blood shaving than on the battlefield - Adolf Hitler help set the program back to original catngo26-Feb-04 5:09 catngo 26-Feb-04 5:09  don't know what i did but when i press the ClassView tap, i don't see the member variable any more. also when i enter code like: class. it suppost to pop-up the box to pick the member variable but now it don't show nothing. I'm a noob here, so those help me a lot. what did i turn off? Re: help set the program back to original Prakash Nadar26-Feb-04 5:15 Prakash Nadar 26-Feb-04 5:15  You didnt turn it off, sometimes it goes away when the intilisense database is currupt.... close the workspace deleteing the .opt file in ur workspace directory and reload the workspace. this may help you, there is another way of deleteing the .clw file and adding the classes to the classwizard, since you said you are a noob, dont try it, coz it may f*uck up the classwizard. I have lost more blood shaving than on the battlefield - Adolf Hitler Re: help set the program back to original catngo26-Feb-04 6:12 catngo 26-Feb-04 6:12  if i load the workspace from my laptop, it will show but it don't on my main comp. so, i don't think any wrong file in the workspace. this is weir and anoying. End Of File (eof) test help catngo26-Feb-04 5:04 catngo 26-Feb-04 5:04  i have a program reading data from a text file and display each section to a grid display. i do a EOF test make sure every info has been extract but seem like a infinite loop. int counter = 0; char Char; char Array[100]; ifstream file; file.open("somefile.txt"); do{ file.get(Char); Array[counter] = Char; ++counter; }while(Char != file.EOF()); seem like good but it a infinite loop; any help? Re: End Of File (eof) test help Prakash Nadar26-Feb-04 5:12 Prakash Nadar 26-Feb-04 5:12  change while(Char != file.EOF()); to while(!file.EOF()); I have lost more blood shaving than on the battlefield - Adolf Hitler Re: End Of File (eof) test help catngo26-Feb-04 6:05 catngo 26-Feb-04 6:05  you da man! thank you! MessageBox button caption change misha_grewal26-Feb-04 4:51 misha_grewal 26-Feb-04 4:51  For standard messagebox, there are push button options like MB_OK, or MB_OKCANCEL. Could I change the caption of these buttons like in place of CANCEL, say EXIT? Any quick method for that? Re: MessageBox button caption change Prakash Nadar26-Feb-04 4:56 Prakash Nadar 26-Feb-04 4:56  If you want to spend some effort to change the text of the buttons it is better to design your own popup message window that will look eligant and match ur application them and change the text the way you want it. a customised sample that you may be interested in Click Here[^] I have lost more blood shaving than on the battlefield - Adolf Hitler Re: MessageBox button caption change toxcct26-Feb-04 4:57 toxcct 26-Feb-04 4:57  Clearly, no you can't... TOXCCT >>> GEII power Re: MessageBox button caption change Shog926-Feb-04 17:49 Shog9 26-Feb-04 17:49  You can modify message boxes with a bit of trickery: http://www.codeproject.com/dialog/delaymessagebox.asp[^] But then again, they're pretty simple beasts - you may just like to create a dialog class of your own, or use something like this: http://www.codeproject.com/dialog/xmessagebox.asp[^] Be aware, message boxes are often unecessary and anoying - be certain such a message is required before adding it. How do you move in a world of fog, That's always changing things? Makes me wish that i could be a dog, When i see the price that you pay. Re: MessageBox button caption change Paul Hooper26-Feb-04 18:32 Paul Hooper 26-Feb-04 18:32  Shog9 wrote: Be aware, message boxes are often unecessary and anoying - be certain such a message is required before adding it. LOL The ONLY time I use a MessageBox is to annoy me into fixing something - sort of a super //TODO: Paul Hooper If you spend your whole life looking over your shoulder, they will get you from the front instead. Add Scroll to CFormView DanYELL26-Feb-04 4:43 DanYELL 26-Feb-04 4:43  This article here: support.microsoft.com/support/kb/articles/q155/9/18.asp shows how to add scrolling to a CFormView. Its a short paragraph of code. It works, but when I keep the program with the scrolling open and then click another program, I get an error at this line: if (GetFocus()->m_hWnd == pWnd->m_hWnd) the first line. It doesn't like the GetFocus() command. Any ideas on how to get rid of the error. Please, any response any one can give me will be greatly appreciated. Sincerely, Danielle (an overworked graduate student) Re: Add Scroll to CFormView Prakash Nadar26-Feb-04 5:00 Prakash Nadar 26-Feb-04 5:00  this is the text from msdn A pointer to the window that has the current focus, or NULL if there is no focus window so the statement GetFocus()->m_hWnd will fail if GetFocus returned NULL (memory exception) I have lost more blood shaving than on the battlefield - Adolf Hitler

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