C / C++ / MFC

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Virtual Namspaces and Drag &Drop operation pic17-Jul-01 23:10 pic 17-Jul-01 23:10  I've written a program to declare in the window explorer, a new namespace and virtual folders inside. But i cannot drag & drop a folder or a file from the the left tree view of the window explorer (items in the disk C for example) to a virtual folder in my new namespace (still on the left tree view of the window explorer). The flag SFGAO_DROPTARGET is on for the namespace and also on for each virtual folders when the IShellFolder::GetAttibutesof() method is called ! Someone can help me ? Pierre Re: Virtual Namspaces and Drag &Drop operation 17-Jul-01 23:24 17-Jul-01 23:24  you must use the true format, if you can't , you will be failed Re: Virtual Namspaces and Drag &Drop operation pic19-Jul-01 6:01 pic 19-Jul-01 6:01  What is the true format ? Why did the func :OnChar not happened when a key pressed 17-Jul-01 21:10 17-Jul-01 21:10  I try to perform actions for the event WM_CHAR but this func not performed. Why ?????? Re: Why did the func :OnChar not happened when a key pressed Patrick Hoffmann17-Jul-01 23:00 Patrick Hoffmann 17-Jul-01 23:00  Some keys do not produce OnChar messages. But you may catch the WM_KEYDOWN and WM_KEYUP messages. rtfm! MSDN says... Remarks Because there is not necessarily a one-to-one correspondence between keys pressed and character messages generated, the information in the high-order word of the lParam parameter is generally not useful to applications. The information in the high-order word applies only to the most recent WM_KEYDOWN message that precedes the posting of the WM_CHAR message. For enhanced 101- and 102-key keyboards, extended keys are the right ALT and the right CTRL keys on the main section of the keyboard; the INS, DEL, HOME, END, PAGE UP, PAGE DOWN and arrow keys in the clusters to the left of the numeric keypad; and the divide (/) and ENTER keys in the numeric keypad. Some other keyboards may support the extended-key bit in the lParam parameter. Whistler: The WM_UNICHAR message is the same as WM_CHAR, except it is designed to send or post Unicode characters to ANSI windows. (Best Regards,) Patrick Hoffmann ------------------------------------------------------------------------------- Technical and Operations Manager, System Analyst, Software Architect PGP: http://www.novacom.net/pgp/PatrickHoffmann.asc ------------------------------------------------------------------------------- veturo, der kostenlose NOVACOM Routenplaner für Europa... http://www.veturo.de -------------------------------------------------------------------------- Re: Why did the func :OnChar not happened when a key pressed Igor Sukhov18-Jul-01 1:15 Igor Sukhov 18-Jul-01 1:15  try catch this message in PreTranslateMesssage method of your window class... Best regards, ----------- Igor Soukhov (Brainbench/Tekmetrics ID:50759) igor@soukhov.com | ICQ:57404554 | http://soukhov.com Message queues of windows? Frankie17-Jul-01 21:02 Frankie 17-Jul-01 21:02  Hi, I have an application that makes use of a splitter window. One pane makes use of several (up to sometimes 20) CView deriven windows. Each of this views has a lot of child CWnd deriven windows and each such a window also has child controls like CCombo, CEdit CLisBox etc. Now I have a serious performance problem I think. My theory is that al the windows are 'eating' performance by means of their message queues, is this possible? And if so, is it possible to stop these queues for the above described views that are not active? Or is there a solution to decrease CPU use? Hope someone can help me with this. Regards, Frank. Re: Message queues of windows? Michael Dunn17-Jul-01 21:21 Michael Dunn 17-Jul-01 21:21  A message queue belongs to a thread, not a window, so you could have 15000 windows but they'd share the same queue. My guess is that any slowdown would be due to MFC having to walk the message maps of all the views whenever a message is sent to your app. --Mike-- http://home.inreach.com/mdunn/ Sometimes, arming yourself with a big pointy stake just won't do you any good. Re: Message queues of windows? Frankie17-Jul-01 22:02 Frankie 17-Jul-01 22:02  Ok..I think I understand my problem now. I have a lot of CWnd deriven windows in each view which all have their own message map, each of these windows also have child windows which also have their own message map. Some numbers: 10 view classes, with each 10 windows and each of this window 20 sub windows -> say more than 220 windows that have their own message map. Could this cause my program to be very slow? And is there by any means a way to speed up the proces, work around the message map, or let MFC know not to walk through the message maps of certain windows (say all windows in the views that are not active?) How to capture Events & HTML content in Netscape browser PrashanthBA17-Jul-01 19:09 PrashanthBA 17-Jul-01 19:09  Hi Friends, - I need to know following things a) how to capture html text displayed in the Netscape Browser. b) how to capture the events like Key down, Key Up events in the Netscape Browser In any one of these programming languages C ,C++ or VC++, Java. Thanks, Prashanth Prashanth BA Changing pointer in CDaoRecordset ... Hadi Rezaee17-Jul-01 18:26 Hadi Rezaee 17-Jul-01 18:26  Hi all, I want to know how can i change pointer with giving the number for pointing ??? I mean, when i give 2 to function it must point to record two ... I have algorothm for myself: m_rs->Move(lLink - m_rs->GetAbsolutePosition() - 1); lLink is variable that i get of user for pointing ... Do you have any good idea ? My month article: Game programming by DirectX by Lan Mader. Please visit in: www.geocities.com/hadi_rezaie/index.html Hadi Rezaie MFC -- verifying that a folder exists Stephane Denis17-Jul-01 17:28 Stephane Denis 17-Jul-01 17:28  I do you verify that a folder exists with MFC? Thanks Re: MFC -- verifying that a folder exists Derek Waters17-Jul-01 17:37 Derek Waters 17-Jul-01 17:37  Try: if (GetFileAttributes("My filename") & FILE_ATTRIBUTE_DIRECTORY) { // The directory exists } ------------------------ Derek Waters derek@lj-oz.com coloured scroll bars Nick Blumhardt17-Jul-01 16:45 Nick Blumhardt 17-Jul-01 16:45  Are the coloured scroll bars (on the codeproject website if you have IE5.5+) able to be achieved in C++ apps? i.e., is there a new version of the common controls with an extended FlatSB api or what??? Would be so perfect for some stuff we're doing here. Nb Sending Email in Win32 Nick Blumhardt17-Jul-01 12:49 Nick Blumhardt 17-Jul-01 12:49  Hi all, Is there an API function to send emails? We need to send email from an NT service... haven't come across anything so far. thanks n Re: Sending Email in Win32 17-Jul-01 15:11 17-Jul-01 15:11  How do you want to do it? MAPI, sockets, something else? Re: Sending Email in Win32 Nick Blumhardt17-Jul-01 16:42 Nick Blumhardt 17-Jul-01 16:42  oops- MAPI is what I was looking for Re: Sending Email in Win32 18-Jul-01 2:22 18-Jul-01 2:22  Check MSDN, the MAPI methods, oddly enough, are prefixed with mapi. I.E. MAPILogon, MAPISendMail, etc. Controls. John Uhlenbrock17-Jul-01 12:25 John Uhlenbrock 17-Jul-01 12:25  I have a group-box enclosing 4 check boxes. I want to keep the group box, but I also want to be able to check any number of the check boxes. How can I do this? As well, how can I keep my SDI formview based app from being re-sized? Thanks, John. Re: Controls. Tim Deveaux17-Jul-01 14:06 Tim Deveaux 17-Jul-01 14:06  Er - from memory if you play with the Group check box in the properties of the cb controls, you should get it - works for radio buttons too I think. In InitInstance you'll see the main window handled - if you call ModifyStyle to remove the WS_THICKFRAME style for it you should effectively make the window unresizable. Hmmmm might look at WM_MAXIMIZEBOX as well.. Re: Controls. Michael Dunn17-Jul-01 14:13 Michael Dunn 17-Jul-01 14:13  Check a checkbox with CheckDlgButton() - it doesn't matter how many you have or whether they're in a group box. --Mike-- http://home.inreach.com/mdunn/ Sometimes, arming yourself with a big pointy stake just won't do you any good. Dialog bars. John Uhlenbrock17-Jul-01 11:36 John Uhlenbrock 17-Jul-01 11:36  Still looking for an answer to.... MSDN states: "While it is normal to derive your own dialog classes from CDialog, you do not typically derive your own class for a dialog bar. Dialog bars are extensions to a main window and any dialog-bar control-notification messages, such as BN_CLICKED or EN_CHANGE, will be sent to the parent of the dialog bar — the main window." I do not know how to use a dialog bar's controls. I can load the dialog bar, but I can't activate the bottons so they may be pressed, I can't set text in textboxes, I can't set the status of check-boxes. How are you supposed to get variables associated with the controls on the dialog bar if you don't have a derived class. Thanks, John Re: Dialog bars. Tomasz Sowinski17-Jul-01 23:24 Tomasz Sowinski 17-Jul-01 23:24  Your need a command handler implemented in CMainFrame class to enable button and respond to events. You just have to add this manually. Assuming that your button has and IDC_BUTTON1 id, you have to: 1) insert member declaration in Mainfrm.h: afx_msg void OnButton1(); Add this line outside the //{{AFX_MSG block 2) insert member definition in Mainfrm.cpp void CMainFrame::OnButton1() { AfxMessageBox("Button1 pressed."); } 3) add appropriate entry to message map in Mainfrm.cpp ON_COMMAND(IDC_BUTTON1, OnButton1) It's safer to have this line outside the //{{AFX_MSG_MAP block - ClassWizard has the tendency to overwrite stuff inside //{{AFX_xxx. Well, that's all - you should see the msgbox after pressing the button. If you want to conditionally enable/disable control (like toolbar buttons or menu items), use ON_UPDATE_COMMAND_UI macro. How are you supposed to get variables associated with the controls on the dialog bar if you don't have a derived class Your CMainFrame probably has a CDialogBar member, say m_dlgbar. Use m_dlgbar.GetDlgItem(IDC_YOURCONTROL) to get access to specific controls. For example, to get access to edit box located on a dialog bar, use this: CEdit *pEdit = (CEdit *)m_dlgbar.GetDlgItem(IDC_MYEDIT1); Tomasz Sowinski -- http://www.shooltz.com Debug Question 17-Jul-01 11:21 17-Jul-01 11:21  Hi, Is there a possibility to catch when the program is under debug mode of MSVC or not ? ( program is with the debug info in the both cases ) Re: Debug Question Michael Dunn17-Jul-01 11:23 Michael Dunn 17-Jul-01 11:23  Call IsDebuggerPresent() --Mike-- http://home.inreach.com/mdunn/ Sometimes, arming yourself with a big pointy stake just won't do you any good.

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