C / C++ / MFC

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Re: Test Michael P Butler31-Mar-02 23:12 Michael P Butler 31-Mar-02 23:12  Nish [BusterBoy] wrote: Nope, I think he's easter-drunk! Yep, too many chocolate eggs have the same effect on me Michael How to get the cut point of the line and the rect Feng Qin31-Mar-02 3:03 Feng Qin 31-Mar-02 3:03  CRect rect( 10, 10, 100, 100 ); CPoint ptBegin(20,50), ptEnd(200,200); How to get the cut point of the rect and the line??? I'm amumu, and you? Re: How to get the cut point of the line and the rect Nish Nishant31-Mar-02 5:11 Nish Nishant 31-Mar-02 5:11  You'll have to manually figure out the various points and use CRect::PtInRect on each of them Nish Has anyone seen my sig? Re: How to get the cut point of the line and the rect Feng Qin31-Mar-02 14:50 Feng Qin 31-Mar-02 14:50  I don't think it is a good solution I'm amumu, and you? Re: How to get the cut point of the line and the rect Nish Nishant31-Mar-02 16:10 Nish Nishant 31-Mar-02 16:10  qf0421 wrote: don't think it is a good solution Well, seems to me, that, that's the only solution, unless someone has wrapped it into a class or function Nish Make MSDN universal, FREE! Re: How to get the cut point of the line and the rect PJ Arends31-Mar-02 15:08 PJ Arends 31-Mar-02 15:08  Take a look at the LineDDA() function. --- CPUA 0x5041 Sonork 100.11743 Chicken Little It may be that your sole purpose in life is simply to serve as a warning to others. Re: How to get the cut point of the line and the rect Feng Qin31-Mar-02 16:02 Feng Qin 31-Mar-02 16:02  Where can get it? I'm amumu, and you? Re: How to get the cut point of the line and the rect Christian Graus31-Mar-02 16:17 Christian Graus 31-Mar-02 16:17  qf0421 wrote: Where can get it? I've got one lying around here somewhere..... It's part of GDI and has been since Windows 3.1. Don't you have MSDN ? Or the Internet ? msdn.microsoft.com is your friend. Christian The tragedy of cyberspace - that so much can travel so far, and yet mean so little. "I'm somewhat suspicious of STL though. My (test,experimental) program worked first time. Whats that all about??!?! - Jon Hulatt, 22/3/2002 Re: How to get the cut point of the line and the rect Feng Qin31-Mar-02 17:13 Feng Qin 31-Mar-02 17:13  I can't find it in MSDN 2002. I'm amumu, and you? Re: How to get the cut point of the line and the rect Christian Graus31-Mar-02 18:48 Christian Graus 31-Mar-02 18:48  I see I need to start from the beginning. When the text is a different colour, chances are it's a hyperlink. To tell for sure, move your mouse over it and look in your status bar for a URL. Then click on the URL I provided for you in my last post, and you'll see the appropriate article online. It is most certainly also in the latest MSDN, and every MSDN since 1995, assuming they had them back then. Christian The tragedy of cyberspace - that so much can travel so far, and yet mean so little. "I'm somewhat suspicious of STL though. My (test,experimental) program worked first time. Whats that all about??!?! - Jon Hulatt, 22/3/2002 Re: How to get the cut point of the line and the rect Feng Qin31-Mar-02 20:33 Feng Qin 31-Mar-02 20:33  Thank you, I got it I'm amumu, and you? Re: How to get the cut point of the line and the rect Michael A. Barnhart31-Mar-02 15:42 Michael A. Barnhart 31-Mar-02 15:42  The General Equation is: // line one A = pt2.y - pt1.y; B = pt1.x - pt2.x; C = pt1.x*A + B*pt1.y; // line two D = pt4.y - pt3.y; E = pt3.x - pt4.x; F = pt3.x*D + E*pt3.y; DET = A*E - B*D; if(fabs(DET) < DTSQ) // Paralell lines skip { // Paralell } else { // intersecting point x = (E*C-B*F)/DET; y = (A*F-D*C)/DET; } // DTSQ is deterimined by the accuracy you have (i.e. what is considered to be zero.) example DTSQ=0.00001f //Now is this point on the segement or not for each side of the rect you have. It may miss be on two sides or a corner. Good ideas are not adopted automatically. They must be driven into practice with courageous patients. -Admiral Rickover. ... Re: How to get the cut point of the line and the rect PJ Arends1-Apr-02 5:37 PJ Arends 1-Apr-02 5:37  Thanks Michael, this is an excellent little piece of code. I knew there had to be an easy way of doing this and you nailed it I am going to add this code to my file of assorted functions. Someone, with more knowledge in this area than me, should write an article containing a bunch of geometric functions like this one (or does one already exist somewhere?) --- CPUA 0x5041 Sonork 100.11743 Chicken Little It may be that your sole purpose in life is simply to serve as a warning to others. Re: How to get the cut point of the line and the rect Michael A. Barnhart1-Apr-02 12:04 Michael A. Barnhart 1-Apr-02 12:04  First you are welcome I thought Chris was going to write something, but I am not sure where it would be. I have a number of functions coded through the years. Mostly to support Finite Element Editors. That is part of the issue on what area to write for. I am sure if you did a search on google for the right set of terms you will find sources. Good ideas are not adopted automatically. They must be driven into practice with courageous patients. -Admiral Rickover. ... LoadBitmap from resource using VS.NET? 31-Mar-02 1:14 31-Mar-02 1:14  I recently installed Visual Studio .NET and at times I feel a bit lost in the new development enviroment. For some reason I can't figure out I can't load a bitmap from a resource file. Obviously I'm not doing everything that I should. I'm doing a Win32 application, and not using MFC. HBITMAP hBitmap; // global // inside the message pump (WM_CREATE) hBitmap = LoadBitmap(hThisInstance, "MyBitmap"); When I run the app I get the error code saying ERROR_RESOURCE_NAME_NOT_FOUND (the specified resource name cannot be found in the image file). In the project I add a new bitmap resource, change the filename resulting in that Visual Studio load the bitmap into the Bitmap Editor. Visual Studio also gives the bitmap resource an ID, and I change this ID into a string called "MyBitmap". Using the Visual Studio resource identifier, after converting the ID using MAKEINTRESOURCE, results in the same error. Everything worked fine when using VC++ 6, so I'm getting a bit frustrated here. Help me please! Thanks a million! ListBox on CEditView 31-Mar-02 1:15 31-Mar-02 1:15  can anyone tell me plz how to make a listbox appear on a CEditView plz. It's very important to me to make a ListBox appear at runtime. Thanks in advance Bernard Racoute Mail @ bracoute@hotmail.com & Bracoute@hotpop.com Bracoute heh ... progress but... l a u r e n31-Mar-02 1:05 l a u r e n 31-Mar-02 1:05  i got the wabapi.h thing sorted out (i think) but now am hitting other problems what i'm trying to do is use the windows address book in my app and apparently i have to jump thru several hoops wearing a pink tutu to do it (sheesh cant they make this stuff easier!) ... anyways i got this code compiling and working up to the indicated line ... at which point i get an access violation ... *sigh* any clues would help a lot --------------------------------------- HRESULT CL4m3Dlg::InitWAB (LPWABOBJECT *lppWABObject,LPADRBOOK *lppAdrBook) { HRESULT hr = E_FAIL; CString csKey; CString csDllPath; CString csDefault; WAB_PARAM wbp; wbp.cbSize = sizeof(WAB_PARAM); wbp.hwnd = NULL; wbp.szFileName = NULL; wbp.ulFlags = 0; CRegistry cr; cr.SetRootKey(HKEY_LOCAL_MACHINE); cr.SetKey(WAB_DLL_PATH_KEY,false); csDllPath = cr.ReadString(csDllPath,csDefault); // hinstWAB = LoadLibrary_WABDll(); <--- dunno what this is hinstWAB = LoadLibrary(csDllPath); if (hinstWAB){ lpfnWABOpen = (LPWABOPEN) GetProcAddress(hinstWAB, "WABOpen"); if (lpfnWABOpen) ----------> access violation happens on this line hr = lpfnWABOpen (lppAdrBook,lppWABObject,&wbp, 0); } return hr; } ------------------------------------------------- --- "all's fair in love and war but in love there is no geneva convention" Re: heh ... progress but... SeNs31-Mar-02 7:28 SeNs 31-Mar-02 7:28  Hmm... have you got your program incrementing the reference count for the WAB dll in the registry ok? Assuming you have, I think it is something to do with the Loadlibrary statement... I know the usual syntax is: LoadLibrary(file name string); Have you checked that csDllPath is being loaded with the correct path to the dll before calling LoadLibrary? If that's ok then.... What happens when you use: hinstWAB = LoadLibrary_WABDll(); Or: hinstWAB = LoadLibrary_WABDll(csDllPath); Instead of: hinstWAB = LoadLibrary(csDllPath); Re: heh ... progress but... l a u r e n31-Mar-02 9:35 l a u r e n 31-Mar-02 9:35  loadlibrary_wabdll() isnt recognized by the compiler thats why i commented it out and did a normal loadlib call :/ --- "all's fair in love and war but in love there is no geneva convention" Re: heh ... progress but... 1-Apr-02 9:42 1-Apr-02 9:42  Have you tried the sample at <href url=""> http://msdn.microsoft.com/downloads/samples/internet/default.asp?url=/downloads/samples/Internet/messaging/wabtool/Default.asp I ran it and the WABOpen call didn't fail but had no entries for the address book. A bitmap Question 31-Mar-02 0:56 31-Mar-02 0:56  Hi ! I want to ask how one make a bitmap (a picture) transparent in MFC.May a picture Control be transparent ? Re: A bitmap Question PJ Arends31-Mar-02 9:06 PJ Arends 31-Mar-02 9:06  http://www.codeproject.com/bitmap/ --- CPUA 0x5041 Sonork 100.11743 Chicken Little It may be that your sole purpose in life is simply to serve as a warning to others. VC++ 6 for other OS Jon Newman31-Mar-02 0:51 Jon Newman 31-Mar-02 0:51  I know that C++ is used on OSs like Unix, but is there a way to have VC++ compile my apps rather than have to copy it to the target machine every time. Is there an add-on that allows the creation of Linux, MacOS apps using VC++ 6? I'm not late, I'm just not as early as I could have been. Re: VC++ 6 for other OS Michael P Butler31-Mar-02 1:21 Michael P Butler 31-Mar-02 1:21  No, VC6 is very much a Windows only compiler. VC 4.2 used to have an add-on to compile MAC OS apps but Microsoft discontinued that a long time agon. Michael Re: VC++ 6 for other OS Jon Newman31-Mar-02 1:19 Jon Newman 31-Mar-02 1:19  So the only way to make an app for MacOS is to use a Mac and get a software compiler for the MacOS. Are there no freeware/sharware/commercial products for a windows machine that compiles and links a MacOS App? I'm not late, I'm just not as early as I could have been.

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