C / C++ / MFC

FirstPrevNext

Automatic Scrolling in a list box? Anonymous Dave8-Aug-02 8:15 Anonymous Dave 8-Aug-02 8:15  I'm having trouble getting my listbox to scroll automatically as new items are added to it. I've tried using the ScrollWindow method, but it doesn't seem to change anything. What I have now is the following: void MyClass::updateNews( const char *news ) { int max; m_news.AddString( news ); max = m_news.GetScrollLimit( SB_VERT ); m_news.SetScrollPos( SB_VERT, max ); } But it doesn't work quite right. It scroll most of the way down, but there are still a few lines still unshown. Any help would be appreciated. Re: Automatic Scrolling in a list box? Tomasz Sowinski8-Aug-02 8:50 Tomasz Sowinski 8-Aug-02 8:50  Did you try CListBox::SetTopIndex? Tomasz Sowinski -- http://www.shooltz.com What is "scratch" and why can everything be made from it? Re: Automatic Scrolling in a list box? Anonymous Dave8-Aug-02 10:04 Anonymous Dave 8-Aug-02 10:04  Perfect. Thank you. Lines of code in Visual C++ project? Aaron Schaefer8-Aug-02 8:08 Aaron Schaefer 8-Aug-02 8:08  Anybody know of some shareware/freeware to count the lines of code in a VC++ project? Thanks Aaron Re: Lines of code in Visual C++ project? Chris Richardson8-Aug-02 8:24 Chris Richardson 8-Aug-02 8:24  I use the one located here: http://www.codeguru.com/devstudio_macros/LineCount.shtml Chris Richardson Re: Lines of code in Visual C++ project? Aaron Schaefer8-Aug-02 8:39 Aaron Schaefer 8-Aug-02 8:39  Thanks! I'll give it a shot. Submenu :: MFC valikac8-Aug-02 7:52 valikac 8-Aug-02 7:52  Hi. I would like to know is it possible and how to create a submenu. For example, in CEditView, when the user right-click (depends on mouse orientation) Windows draws a submenu with options such as Copy, Paste, etc. I would like to know is there a way to create something like that for *anything* including any view or object using MFC and/or Win32 API. Thanks, Kuphryn Re: Submenu :: MFC User 66588-Aug-02 10:36 User 6658 8-Aug-02 10:36  Simply handle this code in your right mouseclick handler: POINT point; GetCursorPos(&point); CMenu menu; CMenu *submenu; menu.LoadMenu(IDR_POPUP); submenu = menu.GetSubMenu(0); submenu->TrackPopupMenu(TPM_LEFTALIGN | TPM_RIGHTBUTTON,point.x,point.y,GetActiveWindow(),NULL); regards modified 12-Sep-18 21:01pm. Re: Submenu :: MFC valikac8-Aug-02 13:25 valikac 8-Aug-02 13:25  Thanks. I have two questions. First, how do you create the submenu? Do you create one in resource editor? Second, how do you know what option the user selects? Thanks, Kuphryn Re: Submenu :: MFC Cyclist8-Aug-02 17:31 Cyclist 8-Aug-02 17:31  First,You can create one in resource editor,then you add handler to each option by Class Wizard. Second,you can create the submenu dynamicly like below: CMenu popMenu; popMenu.AppendMenu(MF_STRING,ID,string); CPoint pt; ::GetCursorPos(&pt); popMenu.TrackPopupMenu(.......); If you do it by first point above,Class Wizard will know what option the user selects,and call the related handler. Or you can just do like below: int id=popMenu.TrackPopupMenu(......); //id is the ID of the menu option selected if(id==...) { //do you want to do } if(id==....) { //do you want to do;) } Re: Submenu :: MFC valikac9-Aug-02 5:03 valikac 9-Aug-02 5:03  Okay. Thanks. I have not implemented a submenu (context menu). I do admit the process sounds quite simple. One thing I am not sure on is if you create a new menu, say, "Edit Tools" in resource editor, it will show up in the main menu too. Kuphryn Dialog Boxes connection w/ CDocument RalfPeter8-Aug-02 6:22 RalfPeter 8-Aug-02 6:22  I'm rephrasing a previous unanswered Q. How can I directly connect a dialog box to variables declared in a CDocument inherited class? Here's a simplified example: A CMyDocument class is declared in Document.h and has a CString variable (say, m_text). I also have a CMyDialog class declared in a View.h that accepts a string as input from an edit box. When I enter a string, it updates m_text, which is then stored to disk and used throughout the application's classes. Is there a way to direct the DDX to the CMyDocument class? Or is there even a simpler way? Someone must have done this many times, since it seems to be such a commonplace situation. Thx, Ralf. ralf.riedel@usm.edu Re: Dialog Boxes connection w/ CDocument Tomasz Sowinski8-Aug-02 6:56 Tomasz Sowinski 8-Aug-02 6:56  RalfPeter wrote: Is there a way to direct the DDX to the CMyDocument class? Yes, you could use DDX_Text without ClassWizard and read/store string directly into document's data member. You could also skip DDX_Text and use [Get|Set]DlgItemText to access edit control directly in CYourDlg. However, I'd advise against this approach. Treat your dialog as simple device for user interaction. Dialog shouldn't care about document at all. Just invoke a dialog in some CYourDoc method and update m_text when DoModal returns IDOK. Tomasz Sowinski -- http://www.shooltz.com What is "scratch" and why can everything be made from it? Disabling existing controls in a dialog Luis E. Cuadrado8-Aug-02 5:26 Luis E. Cuadrado 8-Aug-02 5:26  Hello Everybody: I was wondering if anyone can tell me how to disable existing control inside a Dialgo box. Ok this is what I want to do. I have a check box control and under that check box I have 2 combo boxes and 2 buttons. What I want to do is if I check the check box, the controls under the check box become enabled. And when I uncheck the check box, the controls under the check box become disabled. Any suggestions are more than welcome. Best regards, Luis E. Cuadrado ) Re: Disabling existing controls in a dialog Tomasz Sowinski8-Aug-02 5:36 Tomasz Sowinski 8-Aug-02 5:36  Handle BN_CLICK for checkbox. In the event handler, use EnableWindow to switch other controls on/off. Tomasz Sowinski -- http://www.shooltz.com What is "scratch" and why can everything be made from it? Re: Disabling existing controls in a dialog Luis E. Cuadrado8-Aug-02 5:46 Luis E. Cuadrado 8-Aug-02 5:46  Hi: Sorry for my ignorance, but does EnableWindow works with controls as well? thanks, Luis E. Cuadrado ) Re: Disabling existing controls in a dialog Tomasz Sowinski8-Aug-02 5:54 Tomasz Sowinski 8-Aug-02 5:54  Luis E. Cuadrado wrote: does EnableWindow works with controls as well? Controls *are* windows. EnableWindow will work. Tomasz Sowinski -- http://www.shooltz.com What is "scratch" and why can everything be made from it? Re: Disabling existing controls in a dialog Renjith Ramachandran8-Aug-02 7:46 Renjith Ramachandran 8-Aug-02 7:46  Create Control Variables Using the ClassWizard and Call Your_Control_Variable.EnableWindow(FALSE) ; To Disable the Control and Your_Control_Variable.EnableWindow(TRUE) ; to enable the Window and using Classwizard make a event Handler Corresponding to BN_CLICKED message of u check box and ur checkbox_control_variable.GetCheck() fuction to determine the check state..id it is true box checked else unchecked..handle the situation as u like... Renjith-CPian. Re: Disabling existing controls in a dialog Luis E. Cuadrado8-Aug-02 7:56 Luis E. Cuadrado 8-Aug-02 7:56  Oh, I see. I'm giving it a try. I'll let you know the results. Thank you for your replies. later, Re: Disabling existing controls in a dialog Luis E. Cuadrado8-Aug-02 9:18 Luis E. Cuadrado 8-Aug-02 9:18  Well, I just did what you guys recommended me and it works. Thank you very much Tomasz Sowinski and Renjith - CPian for all you help. Have a wonderful day. Best regards, Luis E. Cuadrado ) how do they know if those IDs are correct or not? includeh108-Aug-02 5:10 includeh10 8-Aug-02 5:10  i see many web pages with edit controls which allow people to input their bank ID (credit card ID or whatever) and order goods on line. i try to type a random id (with right numbers) and get a responding like "id is not correct". i am wandering how these pages know it is not correct? i think if i input my real id (never try), the pages will know it is right. my question is: do the pages contact to banks (or whatever) immediately to check the inputting? otherwise how do they know at once? (i know c++, applet, php, socket etc tech) thx includeh10 Re: how do they know if those IDs are correct or not? Ravi Bhavnani8-Aug-02 5:19 Ravi Bhavnani 8-Aug-02 5:19  See this algorithm[^]. /ravi Let's put "civil" back into "civilization" http://www.ravib.com ravib@ravib.com Re: how do they know if those IDs are correct or not? includeh108-Aug-02 5:38 includeh10 8-Aug-02 5:38  ur page is quite interesting, thx includeh10 ASSERT(::IsWindow(m_hWnd)) --when? JennyP8-Aug-02 5:12 JennyP 8-Aug-02 5:12  Hello, I keep running in to this bug because I don't really know when the appropriate time is to access various child/control windows in the creation of a dialog. I wish to set some of the controls' initial values (e.g., CMonthCalCtrl::SetDayState) once when the dialog is created and before the user sees the child windows. I have tried to insert such function calls in "OnCreate" or "PreCreateWindow", but these seem to fail. I would like to find the windows message I can use to call such initialization functions that satisfies ASSERT(::IsWindow(m_hWnd)). Thanks! JennyP Re: ASSERT(::IsWindow(m_hWnd)) --when? Ravi Bhavnani8-Aug-02 5:17 Ravi Bhavnani 8-Aug-02 5:17  If it's a modal dialog, you can manipulate the controls in OnInitDialog(). If it's a modeless dialog, do it after the dialog has been shown for the first time. I put my GUI initialization code for modeless dialogs in a method called initGUI() that I call once in OnShowWindow() when the window is being shown. /ravi Let's put "civil" back into "civilization" http://www.ravib.com ravib@ravib.com

Last Visit: 31-Dec-99 18:00     Last Update: 9-Oct-24 4:18 Refresh ᐊ Prev1...16453164541645516456164571645816459164601646116462 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.