C / C++ / MFC

FirstPrevNext

Initial Update in CDialog 23-Jul-01 9:12 23-Jul-01 9:12  I have a progress bar in a CDialog and I want to step it as soon as the dialog becomes visible. I can't do that in InitDialog, because the dialog is not visible yet. Where would I do that? Thank You XP Re: Initial Update in CDialog Chris Losinger23-Jul-01 9:24 Chris Losinger 23-Jul-01 9:24  how about OnShowWindow ? -c ------------------------------ Smaller Animals Software, Inc. http://www.smalleranimals.com A simple question... 23-Jul-01 9:11 23-Jul-01 9:11  I've begun to learn VC (MFC) few days ago. i want to make something using the "ExtractIcon()" function. the first paramter of this function (as written in MSDN) is a handle to instance of the application. How the hell do i get this handle? what should i send him as this first parameter? thanks a lot RG Re: A simple question... Chris Losinger23-Jul-01 9:23 Chris Losinger 23-Jul-01 9:23  Call AfxGetInstanceHandle -c ------------------------------ Smaller Animals Software, Inc. http://www.smalleranimals.com I've tried it but... 23-Jul-01 12:35 23-Jul-01 12:35  look at this code: ... HICON icon = ExtractAssociatedIcon(AfxGetInstanceHandle() , "D:\\file.fp", 0); ASERT(icon==NULL) static.Create(NULL, WS_CHILD|WS_VISIBLE|SS_ICON|SS_CENTERIMAGE, CRect(10,10,150,50), this); static.SetIcon(icon); ... static is CStatic variable. i dont know why, but this code causes an error, the windows error message: "illigal operation" appears. and it happens only after i use this function.... have any ideas? thanks RG Re: I've tried it but... Paolo Messina23-Jul-01 12:45 Paolo Messina 23-Jul-01 12:45  Do you mean ASSERT(icon != NULL) ? Re: I've tried it but... Andrew Peace23-Jul-01 13:05 Andrew Peace 23-Jul-01 13:05  As above about ASSERT; ASSERT(icon != NULL); And also, the icon variable has to be present for the lifetime of the static control - thus you must put it as a member variable of the class, or as a global variable. > Andrew. Re: I've tried it but... Reid23-Jul-01 13:37 Reid 23-Jul-01 13:37  You know, you COULD put it as a global variable... but then again, we also COULD write poor poor poor code... If I were you, i would stick to putting it as a member variable of the Document class or the View class...depends on how it is used... -Reid the C++/C# programmer (Caution: I am a teenager, and that means that I think I know everything...but probably don't...) Re: I've tried it but... Andrew Peace23-Jul-01 13:44 Andrew Peace 23-Jul-01 13:44  Yes you're right about the global variable (obviously) but I said that because....hmmmm....don't know why I said that. You're right - it should be a member of the class that's using it. Truth be told, the reason I said global variable was because I thought maybe he wasn't doing OOP programming, in which case that's pretty much the only alternative. > Andrew. Re: I've tried it but... 23-Jul-01 23:19 23-Jul-01 23:19  you were right about the ASSERT parameter, but still, i dont understand why i get this error message, and it happens only because i used the AfxGetInstanceHandle() function. Please heeelp! thanks. Movable toolbar buttons Jake Palmer23-Jul-01 8:58 Jake Palmer 23-Jul-01 8:58  How can I create a toolbar whose buttons can be rearranged by drag/drop without needing to hold down any keys? Also, another question: in VC++ 6, why can't I create a new MFC class that derives from CToolBar, only from CToolBarCtrl? I've gotten around this by creating the ToolBarCtrls and then changing the inheritance myself, which I don't think ClassWizard is too fond of. thanks, Jake Re: Movable toolbar buttons Paolo Messina23-Jul-01 12:52 Paolo Messina 23-Jul-01 12:52  I can't answer to the first question, sorry. As for the second... it's just what I did two days ago and it works well. May this could comfort you After you replaced each occurence of CToolBarCtrl with CToolBar, make sure you delete the .clw file and start ClassWizard to create a new one. Paolo. makefile file format Nikhil Dabas23-Jul-01 8:35 Nikhil Dabas 23-Jul-01 8:35  Hi gurus, Could somebody point me to some documentation for writing makefiles for use with nmake? Everybody seems to use thaem but I cant find any documentation... Thanks "A surprise to be sure, but a welcome one." - Senator Palpatine Are there is a function that return the current time in 12 BYTE ? 23-Jul-01 8:21 23-Jul-01 8:21  I need to get the current time only in 12 BYTE 2 BYTE - year 2 - month 2 - day 2 - hour 2 - minute 2 - second Re: Are there is a function that return the current time in 12 BYTE ? Michael Dunn23-Jul-01 10:31 Michael Dunn 23-Jul-01 10:31  Call GetSystemTime() which returns the date/time in a SYSTEMTIME struct. SYSTEMTIME has the values in WORDs, which are 2-byte unsigned ints. --Mike-- http://home.inreach.com/mdunn/ "Make sure that if you are using a blow torch that you don't set anything on fire."   -- Chris Maunder Converting COLeDateTime 23-Jul-01 8:19 23-Jul-01 8:19  Hi there, I need to get the numerical value of COleDateTime..i.e. the 37097.999 and I need to put into a CString. I was wondering what the best method is for doing this since this value is a double! Re: Converting COLeDateTime Ben Burnett23-Jul-01 19:16 Ben Burnett 23-Jul-01 19:16  Take a look at the _AfxTmFromOleDate() function in olevar.cpp (located in your MFC source directory) this should give you an idea as to how to do it. -Ben --------- On the topic of code with no error handling -- It's not poor coding, it's "optimistic" libpng 16 Color 23-Jul-01 7:50 23-Jul-01 7:50  Ok, this is a bit of a doosey... I need to save 4-bit (16 color) PNG files, with the pnglib. What I'm starting with is a 24-bit(RGB) unsigned char array style bitmap. I need to figure out two things: 1) How do I convert my 24-bit RGB byte array into a 16 color image? 2) How do I save it as a 4-bit PNG? I have absolutely no clue where to go with this... never done any graphics processing other than full color stuff. I REALLY NEED help!! Any ideas? Code examples? Miracles? Thanx in advance, J. A. WMI Security Problem... Mario M.23-Jul-01 7:43 Mario M. 23-Jul-01 7:43  Hi, Does anyone knows how to set the Shutdown Privilege to WMI on Remote Computers in Visual C++ ? Microsoft did not documented this very well as usual. Any reply is welcome. Thanks in Advance. Best Regards, Mario M. How to change edit portion of CComboBox based on selection 23-Jul-01 7:11 23-Jul-01 7:11  When the user makes an item selection in the CComboBox, I want to change the edit portion of the combo box to be some calculated value based on the user's selection. I've tried just about every event for the combo box to get the user's selection and call SetWindowText on the combo box for the new value. Unfortunately, it looks like events processed after mine then change the edit field back to the actual selection. What is the last possible event that I can trigger on and not have my window text overwriten? Example of what I'm trying to do: CComboBox has: 1 Hour 12 Hours 1 Day 2 Days When a user selects "1 Day", I want the edit portion of the ComboBox to display "86400" seconds. Any help is greatly appreciated. CEdit Control Problem - Bkgr color Gerry23-Jul-01 6:50 Gerry 23-Jul-01 6:50  The edit control has a grey background & black text, but the grey background only fills as far as the text, the rest of the edit control's background is WHITE. HOW CAN I FILL THE WHOLE BACKGROUND COLOR AS GREY. edit controls properties is set at read-only. OnCtlColor code..... HBRUSH CRSStationDefOne::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor) { HBRUSH hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor); if (nCtlColor==CTLCOLOR_EDIT) { CRSValueLoadApp* pApp = (CRSValueLoadApp*)AfxGetApp(); pDC->SetBkColor(pApp->BK_COLOR); pDC->SetTextColor(pApp->FG_COLOR); return hbr; } return NULL; } Gerry. Re: CEdit Control Problem - Bkgr color 23-Jul-01 17:25 23-Jul-01 17:25  You need to change the brush. 1) add a member variable in the dialog: CBrush m_brush; 2) init in in OnInitDialog() : m_brush.CreateSolidBrush(pApp->BK_COLOR); 3) in the destructor : m_brush.DeleteObject(); 4) modify your OnCtlColor() function : HBRUSH CRSStationDefOne::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor) { HBRUSH hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor); if (nCtlColor==CTLCOLOR_EDIT) { CRSValueLoadApp* pApp = (CRSValueLoadApp*)AfxGetApp(); pDC->SetBkColor(pApp->BK_COLOR); pDC->SetTextColor(pApp->FG_COLOR); return (HBRUSH)m_brush.GetSafeHandle(); } return hbr; // why did you return NULL here ? } Re: CEdit Control Problem - Bkgr color 23-Jul-01 17:25 23-Jul-01 17:25  You need to change the brush. 1) add a member variable in the dialog: CBrush m_brush; 2) init in in OnInitDialog() : m_brush.CreateSolidBrush(pApp->BK_COLOR); 3) in the destructor : m_brush.DeleteObject(); 4) modify your OnCtlColor() function : HBRUSH CRSStationDefOne::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor) { HBRUSH hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor); if (nCtlColor==CTLCOLOR_EDIT) { CRSValueLoadApp* pApp = (CRSValueLoadApp*)AfxGetApp(); pDC->SetBkColor(pApp->BK_COLOR); pDC->SetTextColor(pApp->FG_COLOR); return (HBRUSH)m_brush.GetSafeHandle(); } return hbr; // why did you return NULL here ? } Re: CEdit Control Problem - Bkgr color Gerry23-Jul-01 22:35 Gerry 23-Jul-01 22:35  Thank you Mr Anonymous, this works brilliant. We have to change lots of dialog classes, is there a place, perhaps at the app level, we could create the solidbrush & it would work for all dialogs.... Currently, we are creating the brushes in each class, this works. Again, Thanks..... Gerry. remote files 23-Jul-01 6:42 23-Jul-01 6:42  I'm desiging this program in C/C++ with my friend. We are just testing a concept we would like to get to work. All I want to happen... is the program connect to a website and find out if a file exists or not. If it does then it opens it. If not then it says it doesn't exist. One other thing, no mfc!! Is there any "simple" way to do this without have millions of classes and libraries designed to work with web browsers included in the program? Any help on this would be great, because we are relly stuck on this one.

Last Visit: 31-Dec-99 18:00     Last Update: 17-May-24 13:35 Refresh ᐊ Prev1...18156181571815818159181601816118162181631816418165 Next ᐅ

General    News    Suggestion    Question    Bug    Answer    Joke    Praise    Rant    Admin   

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.