C / C++ / MFC

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Saving information in Registry. Speedy10-Jul-02 11:32 Speedy 10-Jul-02 11:32  I want to save some information in SYSTEM REGISTRY and then retrieve. any one? Re: Saving information in Registry. ColinDavies10-Jul-02 11:42 ColinDavies 10-Jul-02 11:42  Why don't you use one of the classes available here at CP ? Regardz Colin J Davies Sonork ID 100.9197:Colin More about me Re: Saving information in Registry. Nish Nishant10-Jul-02 17:46 Nish Nishant 10-Jul-02 17:46  You can use a registry class as Colin Davies suggested but if you want to directly use API, look up the following functions on MSDN RegOpenKeyEx RegCloseKey RegEnumKeyEx RegCreateKeyEx RegDeleteKey RegQueryValueEx and RegSetValueEx Nish Author of the romantic comedy Summer Love and Some more Cricket [New Win] Review by Shog9 Click here for review[NW] Re: Saving information in Registry. sudip11-Jul-02 6:45 sudip 11-Jul-02 6:45  How about the Old style WriteProfileString, WriteProfileInt and to retrieve use the GetProfileInt and GetProfileString. It works for me and it will work for you too. Make sure that in the App's InitInstance change the SetRegistryKey function if you don't want the stuffs to get saved in the "Local AppWizard.. Bla bla". Sudip Its QTime Visual C++ and MFC Sid Kraft10-Jul-02 11:26 Sid Kraft 10-Jul-02 11:26  Hi: I am trying to create a window using Microsoft, Visual C++ with MFC. I created the window with an “edit” box that is supposed to receive input from the keyboard. I also created a variable under the “edit” box IDC_BUTTON1 so that when I input data to the “edit” box, it can be transferred into the variable associated with the IDC_BUTTON1 and used in a C++ program. However, when I execute the program, nothing gets into the variable created. I am not sure of how I input data and transfer it to my C++ program. Any help will be appreciated.;P Re: Visual C++ and MFC Chris Losinger10-Jul-02 11:34 Chris Losinger 10-Jul-02 11:34  in the handler for the button, call UpdateData(TRUE); this will load the data from the dialog into your variables, via the DDX calls that the class wizard has generated for you. -c To explain Donald Knuth's relevance to computing is like explaining Paul's relevance to the Catholic Church. He isn't God, he isn't the Son of God, but he was sent by God to explain God to the masses.    /. #3848917 Image Processing - easy, like Sunday morning. Re: Visual C++ and MFC Desmond Mardle12-Jul-02 8:54 Desmond Mardle 12-Jul-02 8:54  Thanks for your help Joaquín M López Muñoz. I have got the grid into the print dc. just have to resize Desmond Mardle OnPrint() Help Desmond Mardle10-Jul-02 11:00 Desmond Mardle 10-Jul-02 11:00  I have been writing an application for an amatuer radio logbook. The application writes the entries into a grid which is displayed on the screen. This works well the data is stored in an array and the grid is an Active X control. I am trying to write a print function for the app. The problem I have is transfering the grid to the on print routine. Can anyone tell me how to transfer the grid object to the OnPrint device context for printing. Any help would be appreciated Desmond Mardle Des Mardle Re: OnPrint() Help Joaquín M López Muñoz10-Jul-02 12:45 Joaquín M López Muñoz 10-Jul-02 12:45  I'm not sure whether this will work, but it might be worth giving a try: In your OnPrint handler, send a message WM_PAINT to the ActiveX control passing as argument the DC you were provided: void OnPrint(CDC* pDC,CPrintInfo* pInfo) { m_grid.SendMessage(WM_PAINT,(WPARAM)(pDC->m_hDC)); } Joaquín M López Muñoz Telefónica, Investigación y Desarrollo Re: How to maximize dialog at start of Application and++ sudip10-Jul-02 11:08 sudip 10-Jul-02 11:08  Well for the first query: 1) What you have done is right but in the wrong place. You probably have done it in App's InitInstance and after the DoModal() call. The correct place to do it is in the WM_SHOWWINDOW handler in the dialog class.. Just Override WM_SHOWWINDOW and type in ShowWindow(SW_MAXIMIZE).. its gonna work. You can also do it in the InitDialog handler. 2) Override the Oncalcel function in your derived Class. Make sure u don't call CDialog::OnCancel() in it. Thats it Sudip Regions in GDI+ Anonymous10-Jul-02 10:35 Anonymous 10-Jul-02 10:35  When creating regions in GDI+ what is returned? Creating a region in the usual GDI returns a HRGN but what is returned in GDI+? A pointer? If so can I use that pointer stored in a struct for later use? Re: Regions in GDI+ 567890123410-Jul-02 19:43 5678901234 10-Jul-02 19:43  You get Region class instance which is wrapper for HRGN and works like MFC CRgn. You can work with it as with instance of any other class. What is the diff. between GDI and GDI+? Srini Kella11-Jul-02 8:33 Srini Kella 11-Jul-02 8:33  What is the diff. between GDI and GDI+? Re: What is the diff. between GDI and GDI+? NormDroid11-Jul-02 9:01 NormDroid 11-Jul-02 9:01  GDI is the base graphical system that comes with Windows XP/2K/NT/ME etc. If supports base drawing primatives and has limited image support. GDI+ is shipped as a DLL which you can use in your application for 2K/NT/ME this must be shipped with your app. (~1.6mb). What you give is rich support for images, gradient brushes, text etc. etc. The programming model also simplifies the use of GDI: EXAMPLE: WCHAR string[] = L"Draw text in a rectangle by passing a RectF to the DrawString method."; FontFamily fontFamily(L"Arial"); Font font(&fontFamily, 12, FontStyleBold, UnitPoint); RectF rectF(30.0f, 10.0f, 100.0f, 122.0f); SolidBrush solidBrush(Color(255, 0, 0, 255)); graphics.DrawString(string, -1, &font, rectF, NULL, &solidBrush); Pen pen(Color(255, 0, 0, 0)); graphics.DrawRectangle(&pen, rectF); ... GDI+ is supported by .NET by default. Normski. - Professional Windows Programmer Thank you very much. Srini Kella11-Jul-02 10:28 Srini Kella 11-Jul-02 10:28  Thank you verymuch for your detailed response. Re: What is the diff. between GDI and GDI+? Jay Beckert11-Jul-02 16:30 Jay Beckert 11-Jul-02 16:30  I like the GDI+ compared to GDI just for the image support alone. I still find it confusing since to me it seems you have to convert some things to GDI+. For example Rect to Crect when you use GetClientRect() or creating a bmp with CreateCompatibleBitmap() then using the HBITMAP handle for GDI+ Bitmap::FromHBITMAP(). Or am I missing something? Other than that I love the new bush and image classes. Re: What is the diff. between GDI and GDI+? Jay Beckert12-Jul-02 8:18 Jay Beckert 12-Jul-02 8:18  It's actually making sense to me now. The graphics object is associated with a dc then you can use that graphics object to draw, paint or what ever you can dream of. You can even have multiple graphics objects associated with a dc and each one is independent which I think is pretty cool. I was trying to use multiple dc's associated with multiple graphics objects and wondering why each object I had was independent. LOL It's just one big wrapper for GDI. Looks like MS is trying to integrate GDI+ more closely to DirectX. Re: What is the diff. between GDI and GDI+? NormDroid12-Jul-02 11:31 NormDroid 12-Jul-02 11:31  Jay If this makes you feel any better, I wrote my 2nd windows app. a tile puzzle game similar to the apple one. I tried to use a DC for each tile... No No No. any way a good way of learning Win32/GDI I still have the source code 'circa 93 maybe a good time to revamp and submit as a codeproject app. Normski. - Professional Windows Programmer Re: What is the diff. between GDI and GDI+? Jay Beckert12-Jul-02 18:30 Jay Beckert 12-Jul-02 18:30  I keep maintaining a 2D chat client/server app and every time I set out to learn something new or better I apply it to my app. It was my first windows app that I attempted. My wife likes these 2D chats and their kinda of fun. I told her I could program one better. Three years later and I'm still making it better. LOL I was a big windows hater in the beginning and was determined to stay Unix/Linux or Dos based - that quickly changed when I seen the bigger paycheck. So everything for a reason. Since going for the windows based work I'd have to say I'v learned more than ever from the experience. It would be cool to see how you did your game - That is if you really want to give it up. I might do another app for codeproject dealing with unlimited dynamic menu sub items for a bookmark idea I did. Sort of like IE explorer. I never seen decent examples of that. Anyways I'm rambling on. Cheers Norm CFileDialog, user specify directory only ? Robert Palma Jr.10-Jul-02 9:46 Robert Palma Jr. 10-Jul-02 9:46  I would like to use the CFileDialog class to allow a user to navigate-to and specify a directory. My program will write a file to this directory at a future time, in other words it is not a simple 'immediately save a file' situation. How can this be done? I've used CFileDialog quite a bit for finding 'files' and saving 'files' but not finding a directory. TIA ! Re: CFileDialog, user specify directory only ? Michael Dunn10-Jul-02 10:12 Michael Dunn 10-Jul-02 10:12  Use SHBrowseForFolder --Mike-- Just released - RightClick-Encrypt v1.3 - Adds fast & easy file encryption to Explorer My really out-of-date homepage Sonork-100.19012 Acid_Helm Re: CFileDialog, user specify directory only ? Robert Palma Jr.10-Jul-02 11:21 Robert Palma Jr. 10-Jul-02 11:21  Thanks Mike.... almost got it working I'm a bit confused on the pidlroot, ITEMIDLIST for specifying the starting directory. How exactly do I put a null string or a class string with the start path into this function? TIA Re: CFileDialog, user specify directory only ? Michael Dunn11-Jul-02 16:10 Michael Dunn 11-Jul-02 16:10  It's easier to provide a callback function and set the starting dir there. Check out the wrappers classes here at CP, any wrapper worth its salt will have the code to do this, which you can then copy. --Mike-- Just released - RightClick-Encrypt v1.3 - Adds fast & easy file encryption to Explorer My really out-of-date homepage Sonork-100.19012 Acid_Helm Re: CFileDialog, user specify directory only ? Desmond Mardle10-Jul-02 11:23 Desmond Mardle 10-Jul-02 11:23  Hi you can specify the path in the constructor to the directory. You can then set a flag in the constructor to default to the dirctory you have specified. CFileDialog( BOOL bOpenFileDialog, LPCTSTR lpszDefExt = NULL, LPCTSTR lpszFileName = NULL, DWORD dwFlags = OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT, LPCTSTR lpszFilter = NULL, CWnd* pParentWnd = NULL ); Parameters bOpenFileDialog Set to TRUE to construct a File Open dialog box or FALSE to construct a File Save As dialog box. lpszDefExt The default filename extension. If the user does not include an extension in the Filename edit box, the extension specified by lpszDefExt is automatically appended to the filename. If this parameter is NULL, no file extension is appended. lpszFileName The initial filename that appears in the filename edit box. If NULL, no filename initially appears. dwFlags A combination of one or more flags that allow you to customize the dialog box. For a description of these flags, see theOPENFILENAME structure in the Win32 SDK documentation. If you modify the m_ofn.Flags structure member, use a bitwise-OR operator in your changes to keep the default behavior intact. lpszFilter A series of string pairs that specify filters you can apply to the file. If you specify file filters, only selected files will appear in the Files list box. See the Remarks section for more information on how to work with file filters. pParentWnd A pointer to the file dialog-box object’s parent or owner window. Remarks Call this function to construct a standard Windows file dialog box-object. Either a File Open or File Save As dialog box is constructed, depending on the value of bOpenFileDialog. To allow the user to select multiple files, set the OFN_ALLOWMULTISELECT flag before calling DoModal. You need to supply your own filename buffer to accommodate the returned list of multiple filenames. Do this by replacing m_ofn.lpstrFile with a pointer to a buffer you have allocated, after constructing the CFileDialog, but before calling DoModal. Additionally, you must set m_ofn.nMaxFile with the number of characters in the buffer pointed to by m_ofn.lpstrFile. To allow the user to resize an Explorer-style dialog box using either the mouse or keyboard, set the OFN_ENABLESIZING flag. Setting this flag is necessary only if you provide a hook procedure or custom template. The flag works only with an Explorer-style dialog box; old-style dialog boxes do not permit resizing. The lpszFilter parameter is used to determine the type of filename a file must have to be displayed in the file list box. The first string in the string pair describes the filter; the second string indicates the file extension to use. Multiple extensions may be specified using ‘;’ as the delimiter. The string ends with two ‘|’ characters, followed by a NULL character. You can also use a CString object for this parameter. For example, Microsoft Excel permits users to open files with extensions .XLC (chart) or .XLS (worksheet), among others. The filter for Excel could be written as: I will send you an example tomorrow when I return to work. Hope this helps Des Mardle Re: CFileDialog, user specify directory only ? Desmond Mardle11-Jul-02 4:43 Desmond Mardle 11-Jul-02 4:43  Hears a constructor I use to specify a directory and a file type CFreqInfoFile pFreqInfoFile(FALSE,"fqu","c:\\frequency data\\*.fqu", N_EXPLORER | OFN_OVERWRITEPROMPT,"Freq Data(.fqu)",pParent); pFreqInfoFile.DoModal(); // to display dialog box Des Mardle

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