C / C++ / MFC

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Re: Simeple MFC Question Joaquín M López Muñoz4-Jul-02 8:59 Joaquín M López Muñoz 4-Jul-02 8:59  GetParent should return the parent window. Doesn't this work for you? Joaquín M López Muñoz Telefónica, Investigación y Desarrollo Parsing email Steven Gregg4-Jul-02 7:05 Steven Gregg 4-Jul-02 7:05  Are there any libraries available to assist with parsing a simple email file (.eml)? For example, functions to give me the sender, receiver, attachments, etc. Thanks. creating a directory. MkDir?? Kuniva4-Jul-02 5:48 Kuniva 4-Jul-02 5:48  uh stupid question i know but i need to create a new directory from code and i found MkDir() in io.h but that doesn't seem to work with Visual Studio. I have an MFC app so i need either the MFC or the Win32 way to create a new directory... Thanks in advance. Kuniva -------------------------------------------- Re: creating a directory. MkDir?? Chris Losinger4-Jul-02 5:58 Chris Losinger 4-Jul-02 5:58  mkdir works fine, if your app uses MFC or not. i use it all the time. -c Being just contaminates the void.   --Robyn Hitchcock Image Processing - easy, like Sunday morning. Re: creating a directory. MkDir?? Martin Ziacek4-Jul-02 5:59 Martin Ziacek 4-Jul-02 5:59  Have you seen API function CreateDirectory() ? VC++ 6 or VC.NET Asim Hussain4-Jul-02 5:15 Asim Hussain 4-Jul-02 5:15  Hi, I'm considering upgrading to VC.NET (Standard Edition) from my well used and understood VC++ 6. From what I have gathered so far though as far as C++ goes there is not a lot of difference between these two versions apart from the use of the MSIL. Am I wrong? Does anyone know of any reason I should not upgrade? Are there any compatability issues, will I be able to port my old code accross? Thanks Asim Hussain. ......... I'd rather be rich than stupid. Re: VC++ 6 or VC.NET Michael P Butler4-Jul-02 5:21 Michael P Butler 4-Jul-02 5:21  There are a few compatability issues that may cause you a few headaches. The user interface is poor and not suited to MFC development at all. It is a major shift from the old ClassWizard of VC6. For my C++ code I'm sticking with VC6, it's not worth the upgrade for all the productivity headaches. Michael Logic, my dear Zoe, merely enables one to be wrong with authority. - The Doctor Re: VC++ 6 or VC.NET Chris Losinger4-Jul-02 6:00 Chris Losinger 4-Jul-02 6:00  as the above post says, the IDE is totally different from VC6. it's more like VB7. i hate it, frankly. there are some incompatibility issues between MFC versions, too. i'm staying with VC6 -c Being just contaminates the void.   --Robyn Hitchcock Image Processing - easy, like Sunday morning. Stay away from VC.net Abin4-Jul-02 15:08 Abin 4-Jul-02 15:08  Oh man VC.net SUCKS so much comparing to VC6, well, at least I for one would say that. The IDE is poor designed, class wizard is gone, you will have such a hard and burdensome time to remove tied mamber variables or message handlers from your project, and one more funny thing is that, the "const" keyword for class member functions is no longer available, what a bloody joke. Of course you can fix those by typing all codes into *.h and *.cpp manually, but why should you? If you wanna do C#, ASP.net and VB.net, you need to upgrade to .net, if all you do is C++, not only it's a waste of money, but you will absolutely regret. printing pdf's Bernhard4-Jul-02 4:54 Bernhard 4-Jul-02 4:54  i should print pdf's in the background (without actually showing them).. my problem is that the only way i could achieve to do this is through the acrobat reader activeX control.. but this works for me just on a dialog box.. and loading fails if i want to hide the activeX control.. does anybody of you know a solution for my problem ? my com - knowledge is totally small.. so i don't know if this is possible.. using the methods of an activeX control without showing it.. thanks in advance, bernhard "I'm from the South Bronx, and I don't care what you say: those cows look dangerous." U.S. Secretary of State Colin Powell at George Bush's ranch in Texas Re: printing pdf's Roger Allen4-Jul-02 5:50 Roger Allen 4-Jul-02 5:50  Just call moveWIndow on it so its off the edge of your dialog box. Its visible, but not... Roger Allen Sonork 100.10016 If I had a quote, it would be a very good one. Menubar... 4-Jul-02 4:42 4-Jul-02 4:42  How to change the menubar background color ? Dialog based appication and MDI insert roblem chen4-Jul-02 3:57 chen 4-Jul-02 3:57  Dear all, I have a dialog based application, now i want to add new parts to the application by insert a MDI project. It looks like that the MDI window should be appeared by click a button in a dialog based application. How should i do? How to deal with the problem of the dialog based main application window and the Mainfrm window? Thanks in advance! chen how to change a CDialogBar caption ? bisserke4-Jul-02 3:55 bisserke 4-Jul-02 3:55  How can I change the caption of a CDialogBar ? I tried "m_DialogBar->SetWindowText("blah blah"); " since a CDialogBar is derived from CWnd, but this doesn't seem to work. strangely this does work when I dock the dialogbar and then make it floating again. Anybody knows how come ? Or even better how tochange the caption ? thx, wouter I used to have a life ... now I have a computer Re: how to change a CDialogBar caption ? Joaquín M López Muñoz4-Jul-02 8:56 Joaquín M López Muñoz 4-Jul-02 8:56  (Just a guess) Try issuing m_DialogBar->RedrawWindow() after changing the caption. Joaquín M López Muñoz Telefónica, Investigación y Desarrollo Defining World, Projection and View Matrices Alan Chambers4-Jul-02 2:50 Alan Chambers 4-Jul-02 2:50  Hi all, got stuck on Direct3D again, already. I have created my translation, rotation, scale and concatenation matrices and would like to create a world, projection and view matrix so that I can render a triangle defined in 3d space to the screen. So far my world matrix is equivelant to the Identity matrix (1,0,0,0)(0,1,0,0)(0,0,1,0)(0,0,0,1). I have the following code for my projection and view matrix respectively: void CDXMaths::Projection(float nearplane, float farplane, float fov) { cosine = (float)cos(fov*0.5); sine = (float)sin(fov*0.5); quat = sine / (1.0f - (nearplane / farplane)); m_Projection = Empty(); m_Projection(0,0) = cosine; m_Projection(1,1) = cosine; m_Projection(2,2) = quat; m_Projection(2,3) = sine; m_Projection(3,2) = -quat * nearplane; } void CDXMaths::View(D3DVECTOR from, D3DVECTOR lookat, D3DVECTOR worldup, float roll) { m_View = Identity(); D3DVECTOR updir, rightdir, viewdir; viewdir = Normalize(lookat - from); rightdir = CrossProduct(worldup, viewdir); updir = CrossProduct(viewdir, rightdir); rightdir = Normalize(rightdir); updir = Normalize(worldup); m_View(0,0) = rightdir.x; m_View(0,1) = updir.x; m_View(0,2) = viewdir.x; m_View(1,0) = rightdir.y; m_View(1,1) = updir.y; m_View(1,2) = viewdir.y; m_View(2,0) = rightdir.z; m_View(2,1) = updir.z; m_View(2,2) = viewdir.z; m_View(3,0) = -DotProduct(rightdir, from); m_View(3,1) = -DotProduct(updir, from); m_View(3,2) = -DotProduct(viewdir, from); if (roll != 0.0f) { m_View = Multiply(RotateZ(-roll), m_View); } } For the Projection matrix I set the field of view to 60 degrees (converted to radians) with a near plane of 1.0f and a far plane of 1000.0f. For the view matrix I set the from vector to (0,0,0), the lookat vector to (0,0,1), the worldup vector to (0,1,0) and the roll to 0. I then set the D3DDevices geometry pipeline to these world, projection and view matrices (in that order, with appropriate flags). The code I then use to render is: m_pD3DDevice->SetRenderState(D3DRENDERSTATE_LIGHTING, false); if (SUCCEEDED(m_pD3DDevice->BeginScene())) { D3DLVERTEX v[3]; v[0] = D3DLVERTEX(D3DVECTOR(0,2,10), D3DRGB(1,0,0), D3DRGB(1,0,0), 0, 0); v[1] = D3DLVERTEX(D3DVECTOR(2,-2,10), D3DRGB(0,1,0), D3DRGB(1,0,0), 0, 0); v[2] = D3DLVERTEX(D3DVECTOR(-2,-2,10), D3DRGB(0,0,1), D3DRGB(1,0,0), 0, 0); m_pD3DDevice->DrawPrimitive(D3DPT_TRIANGLELIST, D3DFVF_LVERTEX, (LPVOID)v, 3, NULL); } return m_pD3DDevice->EndScene(); However, I just get a black screen. Any ideas on where I am going wrong would be much appreciated. The problem is probably in my matrices somewhere, so if you have any idea where I can get information on defining these matrices properly(except microsoft website etc. cause its crap). I'd appreciate any pointers on this topic, Many Thanks, Alan. "When I left you I was but the learner, now I am the master" - Darth Vader Decode AOL's .art image format 4-Jul-02 2:48 4-Jul-02 2:48  Hello, Do you have any idea how to decode AOL's .art file format? Is there any documentation somewhere on the Internet someone could point it to me? Thanks, Hiu Sing Ngai Re: Decode AOL's .art image format [James Pullicino]4-Jul-02 2:52 [James Pullicino] 4-Jul-02 2:52  Tried wotsit.com? Drinking In The Sun Forgot Password? graphics library emrosa4-Jul-02 2:35 emrosa 4-Jul-02 2:35  I'm looking for a graphic library for visual c++ V5.0. The intention is to plot two-dimensional graphs in a single manner and on-line processing. Thanks, Eric Manuel Rosales Pena Alfaro PhD student Unversity of Essex Wivenhoe Park Colchester, CO4 3SQ Essex, Uk email: emrosa@essex.ac.uk tel: +44-01206-87311 Re: graphics library -Dy4-Jul-02 3:07 -Dy 4-Jul-02 3:07  Hi Emrosa, I don't know if it will do exactly what your after, but have you tried the Free Image library[^]? Dylan Kenneally London, UK Re: graphics library Ravi Bhavnani4-Jul-02 9:08 Ravi Bhavnani 4-Jul-02 9:08  There are some charting controls at CP. /ravi Let's put "civil" back into "civilization" http://www.ravib.com ravib@ravib.com PGL Jonathan de Halleux9-Sep-02 1:57 Jonathan de Halleux 9-Sep-02 1:57  Try the Plot Graphic Library Cheers Jonathan de Halleux, Belgium. MULTI-DIMENSIONAL ARRAYS SEEN AS ONE-DIMENSIONAL ONE emrosa4-Jul-02 2:31 emrosa 4-Jul-02 2:31  Hello. I know that a two-dimensional array can be handles as one-dimensional array by converting the indexes to a single one. Supose you have the following: int *table; table=new int table[3*3]; When referencig table[2][2] by a single index index=(2*3+2); then table[index] can be recalled. Now, I'm having a three-dimensional array and because is faster to handle dynamic arrays, I can define it as: int table1; table1=new int table[3*3*3]; but I got lost finding the index conversion formulae... Eric Manuel Rosales Pena Alfaro PhD student Unversity of Essex Wivenhoe Park Colchester, CO4 3SQ Essex, Uk email: emrosa@essex.ac.uk tel: +44-01206-87311 Re: MULTI-DIMENSIONAL ARRAYS SEEN AS ONE-DIMENSIONAL ONE Alan Chambers4-Jul-02 3:28 Alan Chambers 4-Jul-02 3:28  Your old formulae was xPos + (yPos x Height). I believe your new formulae would therefore be: (xPos + (yPos x Width)) + (zPos x (Height x Width)). This could probably be further reduced. "When I left you I was but the learner, now I am the master" - Darth Vader Re: MULTI-DIMENSIONAL ARRAYS SEEN AS ONE-DIMENSIONAL ONE emrosa4-Jul-02 4:18 emrosa 4-Jul-02 4:18  Thanks for your help....I tried that but it did not work...however, you gave an idea and I put myself to think deeply and I just found this: Let be a multidimensional array MArray[max1stdim][max2nddim]...[maxnthdim], the indexes referencing certain location be i1,i2,...,in. If MArray is declared as int MArray[max1stdim*max2nddim*...*maxnthdim]; then the index referencing the location (i1,i2,...in-1,in) will be: index=(i1*max2nddim*max3rddim*...*maxnthdim)+(i2*max3rddim*...*maxnthdim)+...+(in-1)*maxnthdim+in Then for an array MArray[4][3][2] declared as MArray[3*3*3], the single index to reference (i,j,k)will be: index=(i*4*3)+(j*2)+k I have tried this and it works! Thanks again..... Eric Manuel Rosales Pena Alfaro PhD student Unversity of Essex Wivenhoe Park Colchester, CO4 3SQ Essex, Uk email: emrosa@essex.ac.uk tel: +44-01206-87311

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