C / C++ / MFC

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list control scrolling Angel_Tsankov19-Jul-01 2:48 Angel_Tsankov 19-Jul-01 2:48  Is there a way for list controls to get notified when being scrolled? Combo list Gérald Mercet19-Jul-01 2:43 Gérald Mercet 19-Jul-01 2:43  I would like to know how use the instructions switch, case... with a combo list. I explain it: If i have names in the combo list, and for each name i want to do different actions, for example just create specific afxmessagebox for each name. I know that the better way to do that is to use the switch command, but as it take only numeric expression how could i solve it? gerald Re: Combo list Bret Faller19-Jul-01 13:15 Bret Faller 19-Jul-01 13:15  You can use SetItemData(nItem, dwData) for each item in the listbox/Combobox and then you can do a switch statement using the GetItemData(nItem). In order to make this more efficient you should setup an enum of the values will always be the same. Here's a question though... Are you just trying to get the text of the Item and display that in a messagebox? Bret Faller Odyssey Computing, Inc. treecontrol again 19-Jul-01 2:33 19-Jul-01 2:33  Thanks for the reply last time, but now I have another problem. When I include <afxcmn.h>, to use the treecontrol, I get the following error: LINK : fatal error LNK1104: cannot open file "nafxcwd.lib" It's damn right, because the file does't exist. And it isn't on the cd either, as the help file tells me. What the? WAVK damn tags, here's the include file I ment 19-Jul-01 2:34 19-Jul-01 2:34  afxcmn.h Re: treecontrol again Tomasz Sowinski19-Jul-01 2:46 Tomasz Sowinski 19-Jul-01 2:46  You're trying to link MFC statically - nafxcwd.lib is a static MFC library, debug version. It seems you're using 'Standard Edition' of VC++ (formerly known as 'Learning Edition'). This version doesn't support static linking to MFC. There's an interesting article somewhere on CodeProject dealing with this. Tomasz Sowinski -- http://www.shooltz.com DaoDatabase Keys otvac19-Jul-01 2:17 otvac 19-Jul-01 2:17  How do I create a unique key in a DaoDatabase? Thanks. Richard Dialog in Bho Winston,Dang19-Jul-01 0:43 Winston,Dang 19-Jul-01 0:43  I create a toolbar in the Internet Explorer.When I click one button on this toolbar,I want to show a modal dialog.I use following code in the toolbar's button click events. CMyDialog dlg; int ret=dlg.DoModal(); I get ret=-1. When I create the dialog in the Band.cpp file and make the "dlg" as a global variable, then in the click event I use dlg.ShowWindow(SW_SHOW), It will show the dialog modaless.Now another problem is out.I can't use the "TAB" key to change focus between the controls on the Dialog Box. What's wrong with it? Re: Dialog in Bho 19-Jul-01 2:53 19-Jul-01 2:53  for the solution of the second problem see "Q187988 - PRB: ActiveX Control Is the Parent Window of Modeless Dialog" Transfer Data from a List to a new Dialog Enzi19-Jul-01 0:29 Enzi 19-Jul-01 0:29  Ok, I have this ListBox and I want to transfer the String that was selected in this List to a new Dialog. The Problem is everytime I do dlg.DoModal(); the String reset's to NULL! Maybe someone can help me! Thanx Enzi Re: Transfer Data from a List to a new Dialog Peter Pearson19-Jul-01 1:13 Peter Pearson 19-Jul-01 1:13  Hi, The easiest way is to create a member variable CString (or whatever) in each dialog. Then when you've got the string you want from the list, call: CMyDialog dlg; then: dlg.m_strString = strList; where m_strString is the member variable for the string in the second dialog and strList is the string that holds the value from the list box. Then you can call: dlg.DoModal(); In the second dialog you can no do what you want with m_strString. Cheers, Peter Re: Transfer Data from a List to a new Dialog Enzi19-Jul-01 1:18 Enzi 19-Jul-01 1:18  Ahh thanx! So if u understood right. For each variable I want to use in Dialog2 from Dialog1, I've got to make a Variable in the ckass of Dialog2. Ok thanx for the help! btw Windows Programming is complicated!! Enzi CString or string? Gérald Mercet18-Jul-01 23:57 Gérald Mercet 18-Jul-01 23:57  I would like to concatenate 2 strings like that:"1" and "y" so i would like to know how i have to declare my variables, as string or CString or as LPCSTR? thanks for your answer gerald Re: CString or string? 19-Jul-01 3:12 19-Jul-01 3:12  Its entirely up to you as to whether you use CString or LPCSTR's if you use CStrings: CString a,b,c; a="hello"; b="world"; c=a + b; // c is now "helloworld" or, if you use LPCSTR's: char a[]="hello"; char b[]="world"; LPCSTR c; // LPCSTR is just a long pointer to a char c=new char[80]; // some allocation c=a+b; // is wrong and will probably crash your program strcpy(c,a); strcat(c,b); // c now points to a string "helloworld" hwnd of ctreectrl 18-Jul-01 23:27 18-Jul-01 23:27  I'm making a utility plugin dll for 3d studio and I want to use a tree control in it. I have a dialog which contains the treeview, but I don't know how I can use it from the code. I can get the HWND of the ctreectrl, can I distill some kind of workable pointer from it, or something like it? The problem is that the dialog is added as a panel inside 3dstudio max, all I have is a HWND of the dialog. Thanks, WAVK Re: hwnd of ctreectrl Tomasz Sowinski19-Jul-01 0:11 Tomasz Sowinski 19-Jul-01 0:11  Use CWnd::Attach. This maps HWND to MFC window object. Tomasz Sowinski -- http://www.shooltz.com ODBC and Visual C++ 6.0 SP5 18-Jul-01 22:25 18-Jul-01 22:25  Hi, I work with Visual C++6.0 SP5 under Windows 2000 SP2 I have theis following problem to compile my project in visual c++6.0 I want to connect to a data source (sqlserver or db2). If i attemp to compile my project, the following error message is display : ------------------------------------------------------------------------------ f:\progra~1\sqllib\include\sqlext.h(1676) : error C2146: syntax error : missing ';' before identifier 'SQL_API' f:\progra~1\sqllib\include\sqlext.h(1676) : error C2501: 'SQLRETURN' : missing storage-class or type specifiers f:\progra~1\sqllib\include\sqlext.h(1676) : fatal error C1004: unexpected end of file found ------------------------------------------------------------------------------ Sqlext.h is'nt part of my project Can anybody help me ? Thanks in advance Re: ODBC and Visual C++ 6.0 SP5 19-Jul-01 3:13 19-Jul-01 3:13  It probably is part of your project, you just can't see it. Check your include files it is being added by some other file. You may need to change the order of your includes. Re: ODBC and Visual C++ 6.0 SP5 Bret Faller19-Jul-01 13:17 Bret Faller 19-Jul-01 13:17  You should make sure Sql.h and Sqltypes.h are included whereever you are trying to use ODBC Bret Faller Odyssey Computing, Inc. How to know the database server? Jose Fco Bonnin18-Jul-01 22:12 Jose Fco Bonnin 18-Jul-01 22:12  In my application I'm accessing to several database servers through ODBC (oracle, sql-server, sybase, ...) and I need to access to some system tables, that's the reason what I need to know in which of those systems I'm connected. I can try to access to a specific table with a "try ... catch" but it's not a "pretty" solution. Any idea? Thanks. Is it possible that exe file will return a value ? 18-Jul-01 21:45 18-Jul-01 21:45  Is can I to return a parameter in the program termination in exe file ? Re: Is it possible that exe file will return a value ? 18-Jul-01 23:15 18-Jul-01 23:15  look in help for main, wmain etc. - they return int t! Thank but I did not understand you !!!! 19-Jul-01 4:48 19-Jul-01 4:48  Can you explain your answer ??? Re: Thank but I did not understand you !!!! 19-Jul-01 20:14 19-Jul-01 20:14  your program can look like this: int main(void) { return 7; } calling .bat can work with it: program.exe if errorlevel 7 goto END also you can do this: void main(void) { exit(7); } it is better now? t! Drawing To DCs with Win32 (Not MFC) James Bird18-Jul-01 21:28 James Bird 18-Jul-01 21:28  I have recently moved away from MFC, and focussed on Win32 programming instead. But I am having problems with safe drawing of DCs, particularly the SelectObject() and DeleteObject() functions. I know that whenever you create an object and select it, you must get the old object so you can put it back when your finished. I found some source code for this and it went something like this: HBRUSH hbrNew = CreateSolidBrush(RGB(255, 0, 0)); HBRUSH hbrOld = SelectObject(HDC, hbrNew); // Drawing Stuff... SelectObject(HDC, hbrOld); DeleteObject(hbrNew); But this doesn't work with the compiler. It has a problem with the hbrOld being a HBRUSH. If anyone can help or tell me how to do it properly, it would be greatly appreciated. James Bird - birdjames@bigfoot.com

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