C / C++ / MFC

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How to show a PNG image in my dialog ? adara4-Mar-03 3:43 adara 4-Mar-03 3:43  How to show a PNG image in my dialog ? thanks Re: How to show a PNG image in my dialog ? Mike Zinni4-Mar-03 5:09 Mike Zinni 4-Mar-03 5:09  Take a look at CxImage. It's a great image processing library with support for TONS of different image formats. http://codeproject.com/bitmap/cximage.asp[^] Good Luck! -Mike Zinni "No sh*t it's tough. If it wasn't, everybody and their sister would be an engineer and then you wouldn't have a job." Re: How to show a PNG image in my dialog ? adara4-Mar-03 5:35 adara 4-Mar-03 5:35  Thanks Re: How to show a PNG image in my dialog ? Bartosz Bien4-Mar-03 12:13 Bartosz Bien 4-Mar-03 12:13  You may happily use GDI+ if you need, it's the Platform SDK and no third-party stuff (at least for me - a virtue). Regards, Bartosz Bien Re: How to show a PNG image in my dialog ? Scott H. Settlemier4-Mar-03 15:32 Scott H. Settlemier 4-Mar-03 15:32  Use libpng[^] and be more portable. Help Required for CFormView nutkase4-Mar-03 3:34 nutkase 4-Mar-03 3:34  AOA! last night as i was trying to do one of my Assignments i tried to open a form using my Class inherted from CFormView! the problem is that i was able to show the form as i want but as i close this window using the CWnd::DestroyWindow() i get an Assert Failure! the Code i am using to initialize the window is as follows: //defined in MyClass.h; CMyClass Form; CMyMainView::OnInitialUpdate() { CView::OnInitialUpdate(); CRect Rect; GetClientRect(Rect); Form.Create(NULL,"NewForm",WS_VISIBLE|WS_BORDER|WS_CHILD,Rect,this,1234,NULL); } And to Destroy the Window CMyMainView::OnFileNew() { Form.DestroyWindow(); } i cant understand y i get the assert failure when i click the new button on the toolbar! the Assert Failure Message i get is as follows: Debug Assertion Failed! Program:E:\Chummi.exe File:dbgheap.c Line:1101 Expression:_CrtIsValideHeapPointer(pUserData) //bla bla bla plz help! shoaib! Loading correct IE profile from NT Svc. Neflyte4-Mar-03 3:31 Neflyte 4-Mar-03 3:31  Here's my issue: (note: this is x-posted in OS/Admin) I'm calling an instance of IE from an NT service. If the currently logged-on user is using a proxy server in their profile, this setting is never seen by the instance of the browser tht I just spawned. Starting the browser as the correct user doesnt help either. So, my question is: Does anyone know of a way to make Internet Explorer read the correct user profile when I'm spawning it? Or is everyone that uses a proxy setting screwed if they run my software? Thanks... ....alan showing the screen naradaji4-Mar-03 3:15 naradaji 4-Mar-03 3:15  showing the screen.... Hello, I'm creating an MFC application that does a heavy process consisting of file I/O and database handling. It's an SDI application. The application has a modeless dialog box that informs the user about what is currently being done by it. It works fine. My problem is that if I minimize it while it's processing, or if I click on anohter window to do other stuff while my program processes, and then I try to show it again (clicking on it on the task bar), it won't appear until the processing is finished. But this is not what I want for two reasons: 1. it's a heavy and long processing, so the user need to be able to SEE what the program is doing, to feel that's working and not 'frozen'. 2. it's a long processing, so the user will most like do other stuff in his PC meanwhile. So what I need is that when the user clicks on it the form appears. How can do this? -- narada Re: showing the screen jan larsen4-Mar-03 3:34 jan larsen 4-Mar-03 3:34  You need to do your task in another thread. This is a large issue, but I bet that there is a lot of CP articles on threading. "After all it's just text at the end of the day. - Colin Davies "For example, when a VB programmer comes to my house, they may say 'does your pool need cleaning, sir ?' " - Christian Graus Re: showing the screen naradaji4-Mar-03 3:45 naradaji 4-Mar-03 3:45  Could i simply use AfxBeginThread? Thanks Re: showing the screen jhwurmbach4-Mar-03 3:47 jhwurmbach 4-Mar-03 3:47  search for 'worker thread' here on cp. Your program can show no reaction, because you never give windows a chance to process any messages. My opinions may have changed, but not the fact that I am right. Re: showing the screen Anonymous4-Mar-03 5:33 Anonymous 4-Mar-03 5:33  Is there any way to solve this apart from Threads? urgent..How to use GetDeviceCaps() n GetPixel() problem raner4-Mar-03 2:58 raner 4-Mar-03 2:58  my pgm was using GetPixel() function, but i realize not all device support the function and that we can use GetDeviceCap() to check its RC_BITBLT capability. so though i'm not exactly sure how to use the function, i tried the following.. int test = dc->GetDeviceCaps(RASTERCAPS); (1)It returns me a negative value(-4349)...what does this mean? What shld the function return me if my device has RC_BITBLT capability anyway? (2)If my device doesnt have the capability, what can i do to have the capability? And what determines whether a device has the capability? thks Re: urgent..How to use GetDeviceCaps() n GetPixel() problem Scott H. Settlemier4-Mar-03 8:21 Scott H. Settlemier 4-Mar-03 8:21  I think it is merely: bool bPelSupport=dc->GetDeviceCaps(RASTERCAPS)!=RC_NONE; If your display doesn't support raster operations, then I guess there are no pixels? Render to an offscreen bitmap and test that or directly test against the model from which the display is drawn. (if it is yours) Re: urgent..How to use GetDeviceCaps() n GetPixel() problem raner4-Mar-03 9:39 raner 4-Mar-03 9:39  bool bPelSupport=dc->GetDeviceCaps(RASTERCAPS)!=RC_NONE; gives me compilation error...should there be a bracket somewhere? anyway my dc is defined as below,in my CView class...so shouldnt it have pixels?.. CDC *dc=this->GetDC(); Anyway how do i render to an offscreen bitmap? thks Re: urgent..How to use GetDeviceCaps() n GetPixel() problem 73Zeppelin4-Mar-03 16:34 73Zeppelin 4-Mar-03 16:34  You render to an offscreen bitmap by creating a memory device context for the bmp, or MemDC. You can then blt (BitBlt) to the memDC before blitting to the screen (or other DC). Something like: CDC MemDC; // Get the current DC and create a compatible memDC MemDC.CreateCompatibleDC(pDC); // Can now Blt to the MemDC... // Do stuff - draw, render, etc... // Don't forget to clean up.. MemDC.SelectObject(); Re: urgent..How to use GetDeviceCaps() n GetPixel() problem raner5-Mar-03 5:09 raner 5-Mar-03 5:09  Guess it'll have to read up on that. But do you know how do i test after i've BitBlt it to offscreen bitmap? thks Re: urgent..How to use GetDeviceCaps() n GetPixel() problem Scott H. Settlemier5-Mar-03 6:34 Scott H. Settlemier 5-Mar-03 6:34  But if the display device doesn't support blit operations (RASTERCAPS was RC_NONE) then he won't be able to draw to the offscreen image and blit as the last step. He will have to draw to both DCs instead, using the offscreen image merely for examination. Bug in Visual C++ 6.0 MFC Appwizard Tre K Renegade4-Mar-03 2:20 Tre K Renegade 4-Mar-03 2:20  I just wanted to report this bug and check if anyone else has come across it: In Visual C++ 6.0, when using the MFC Appwizard to create an MFC project with the following settings: - single doc & NO doc/view support - NO toolbar & NO statusbar And then compiling the skeleton program code without applying any changes, the resulting exe crashes on startup. Apparently the child window for the view is not created correctly, because when the frame window tries to set the focus to it, it's window handle is invalid. This only seems to happen with the exact settings described above. Re: Bug in Visual C++ 6.0 MFC Appwizard Jon Hulatt4-Mar-03 2:56 Jon Hulatt 4-Mar-03 2:56  Install Visual Studio Service Pack 5 - it's fixed. #include <beer.h> JPEG,GIF File Display RaajaOfSelf4-Mar-03 1:20 RaajaOfSelf 4-Mar-03 1:20  Can somebody provide me some links or code which will read a JPEG,GIF and display it in a window .Iam doing a MFC project Re: JPEG,GIF File Display Chris Losinger4-Mar-03 1:36 Chris Losinger 4-Mar-03 1:36  did you try searching this site? (maybe in the Bitmap and Palettes section?) there are like a dozen articles that show you how to do this. -c When history comes, it always takes you by surprise. Bobber! Re: JPEG,GIF File Display Chintan4-Mar-03 3:00 Chintan 4-Mar-03 3:00  You can display JPEG, GIF with the help of List Control (CListCtrl). One method "SetBkImage()" of CListCtrl class allowed JPEG,GIF images to display. C.R.Naik Re: JPEG,GIF File Display Mike Zinni4-Mar-03 5:12 Mike Zinni 4-Mar-03 5:12  Take a look at CxImage. It's a great image processing library with support for TONS of different image formats. http://codeproject.com/bitmap/cximage.asp[^] Good Luck! -Mike Zinni "No sh*t it's tough. If it wasn't, everybody and their sister would be an engineer and then you wouldn't have a job." Re: JPEG,GIF File Display Big Art4-Mar-03 7:32 Big Art 4-Mar-03 7:32  If you are using MFC 7, you can use the new CImage class. Art

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