C / C++ / MFC

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Control Event Handler Daniel Kanev5-Jul-06 4:50 Daniel Kanev 5-Jul-06 4:50  I create a control this way: hDrawingControl = CreateWindowEx(WS_EX_LEFT, "Static", NULL, WS_CHILD|WS_VISIBLE|WS_BORDER|WS_TABSTOP, aLeftTop, aBottomRight, aWidth, aHeight, parentHandle, NULL, hInstance, NULL); How can I register an event handler to this control? modified 9-Mar-17 17:20pm. Re: Control Event Handler earl5-Jul-06 4:54 earl 5-Jul-06 4:54  In what? raw win32 / MFC / ATL / other? Re: Control Event Handler Daniel Kanev5-Jul-06 5:12 Daniel Kanev 5-Jul-06 5:12  Raw WIN32. MFC is also interesting for me. So if you know both methods, please tell me! Thank you! modified 9-Mar-17 17:19pm. Re: Control Event Handler earl5-Jul-06 5:30 earl 5-Jul-06 5:30  Sorry, I spaced -- static controls don't support events. In general: MFC supports message cracking; there is a tool built in to visual studio to help with this or you can manually modify the message map macros. win32 makes you do some more work on your own. In general, most controls (and certainly the system controls -- static, edit, button, etc) will notify you via a WM_COMMAND message sent to your WndProc. See the WM_COMMAND docs in the msdn, but basically you check WPARAM for the window identifier, LOWORD(LPARAM) for your child window handle, and HIWORD(LPARAM) for your notification code. See the docs for the various controls to see lists of the notification codes. Or just grab them from the headers -- seach for, eg, EN_CHANGE (code for an edit control changing). http://windowssdk.msdn.microsoft.com/en-us/library/ms649779.aspx earl Re: Control Event Handler Justin Tay5-Jul-06 5:45 Justin Tay 5-Jul-06 5:45  It's not totally clear what you mean by events. As earl says, there isn't anything interesting that a static control would be doing to warrant it sending notifications to the parent window. However, if you want to handle messages going to the control yourself, WM_MOUSEMOVE, WM_LBUTTONDOWN etc etc, you can subclass the window using SetWindowLong with GWL_WNDPROC and specify your own window procedure that would receive the messages. http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnwui/html/msdn_subclas3.asp[^] In MFC you would just inherit off the appropriate base class (CStatic etc) and the framework handles the subclassing for you and you just have to use the IDE to add the messages you are interested in handling to the message map. using a win32 code in program! farshad.f5-Jul-06 4:45 farshad.f 5-Jul-06 4:45  Hi, I have a project using MFC ( win32 but use mfc in static library) and would like to use a code that not use mfc(win32). Anyone know the best way to modify it? thanks in advance farshad Re: using a win32 code in program! Zac Howland5-Jul-06 4:51 Zac Howland 5-Jul-06 4:51  Can you be a little more specific about what you are trying to do? If you decide to become a software engineer, you are signing up to have a 1/2" piece of silicon tell you exactly how stupid you really are for 8 hours a day, 5 days a week Zac Re: using a win32 code in program! Sarath C5-Jul-06 4:55 Sarath C 5-Jul-06 4:55  Most of the MFC classes are a wrapper for win32 functions or doing a set of actions that can be performed with a number if win32 functions. on using win32, you may have to play with handles instead of classes and its pointer. It is depends on your project and amount of MFC code used inside project. Anyway there's a countable effort to make an MFC application to win32 application. e.g there is CWnd::FindWindow function and FindWindow win32 function the differnce is that. CWnd FindWindow returns a static CWnd* (pointer) and FindWindow API return an HWND. in win32 you may have to add more parameters for corresponding API. Sit with MSDN and visual studio. If you are an expert or average knowledge in win32 and MFC, the conversion will be more fast. Using static library and shared library is not a big deal. in the initialization, there we need to call Invoke static library instead for controls. finally it matters in the file size and less number of dependency. SaRath. "It is your attitude, not your aptitude, that determines your altitude - Zig Ziglar." <blink>My Blog | Understanding State Pattern in C++ How to AddString to child dialog Max++5-Jul-06 4:26 Max++ 5-Jul-06 4:26  My project have two dialog box. If I want to call AddString function from parent dialog for add string of List Box Control that in child dialog. How I write the code? Re: How to AddString to child dialog Sarath C5-Jul-06 4:46 Sarath C 5-Jul-06 4:46  is the child dailog is a modal dialog? there you can do this in 2-3 ways. 1. Provide an interface from child dialog(public function) to add the string to list box. Inside that function call "Addstring" function of the required list box. or keep it in data array and update to list box whenever needed(recommended) 2. Return the handle of the list box on calling an interface (public function)provided. ( not recommended) 3. Define a custom message handler in child dialog. pass the string in on calling PostMessage or SendMessage pass the string (pointer) in WPARAM or LPARAM (casting may requried). Inside the message handler cast the passed parameter to string pointer and update the listbox. for message sending in this case SendMessage is good because post message will return on posting the command. it will not wait till the update complete. so the pointer passing to the function may get invalid. ( this is too not recommended) SaRath. "It is your attitude, not your aptitude, that determines your altitude - Zig Ziglar." <blink>My Blog | Understanding State Pattern in C++ Thread ..Serial communication..COM DLL RockyJames5-Jul-06 3:57 RockyJames 5-Jul-06 3:57  hi i have downloaded a project from Codeproject,for serial port communication. http://www.codeproject.com/com/CompCateg2.asp[^] In SerialCommunications Classes i have added function Ready() and function Run(),When Ready function is called i am getting "ok" reply from instrument,then i call Run() function, it takes 5 to 10 mintues to complete the run, so i have to wait,bec of that UI freez,for that i want to create a worker thread,so that worker thread will check for the reply from instrument,after some time..how to dot it..?.In Ready() i am calling On_FireSend()..should i need to in Run() also..? Thanks in before James -- modified at 9:57 Wednesday 5th July, 2006 Re: Thread ..Serial communication..COM DLL earl5-Jul-06 4:22 earl 5-Jul-06 4:22  Cedric answered your question below. CreateThread earl [Message Deleted] RockyJames5-Jul-06 3:48 RockyJames 5-Jul-06 3:48  [Message Deleted] Re: Thread Sarath C5-Jul-06 3:52 Sarath C 5-Jul-06 3:52  ??????? Is that your question? SaRath. "It is your attitude, not your aptitude, that determines your altitude - Zig Ziglar." <blink>My Blog | Understanding State Pattern in C++ Re: Thread RockyJames5-Jul-06 4:08 RockyJames 5-Jul-06 4:08  hi sarath..when u have checked..it did not complete my question,i was just checking whether..URL link is correctly added or not..pls help me..if u have any idea... James -- modified at 10:09 Wednesday 5th July, 2006 Re: Thread _AnsHUMAN_ 5-Jul-06 3:52 _AnsHUMAN_ 5-Jul-06 3:52  What's the problem? Somethings seem HARD to do, until we know how to do them. _AnShUmAn_ Re: Thread Marc Soleda5-Jul-06 3:53 Marc Soleda 5-Jul-06 3:53  Well done!! ... she said you are the perfect stranger she said baby let's keep it like this... Dire Straits Re: Thread RockyJames5-Jul-06 4:09 RockyJames 5-Jul-06 4:09  hi marcdev..when u have checked..it did not complete my question,i was just checking whether..URL link is correctly added or not..pls help me..if u have any idea... Re: Thread ..Serial communication..COM DLL Cedric Moonen5-Jul-06 3:57 Cedric Moonen 5-Jul-06 3:57  Just start a worker thread as you said in which you manage the communication with your device. Communication with the UI can be done through messages. I don't really understand your problem, so I cannot give a more specific answer. Cédric Moonen Software developer Charting control Re: Thread ..Serial communication..COM DLL RockyJames5-Jul-06 4:05 RockyJames 5-Jul-06 4:05  pls download the sample from URL,i have added to funtions Ready() and Run(),in Ready if (TRUE == m_Serial.IsOpen()) { m_Serial.Write(buf, sizeof(buf)); Fire_OnSend(); return S_OK; } at client slide i am getting "ok" reply from instrument.. Next In Run()..i do the same but..i will get "ok" reply after 5 to 10 mintues..bec.instrument..5 to 10 min to Run..So in Run() i want to create an worker thread..so that this thread will pool ..for."ok" reply..this is my logic..i want know ,how to implement it.. Thanks in before james Re: Thread ..Serial communication..COM DLL Cedric Moonen5-Jul-06 4:18 Cedric Moonen 5-Jul-06 4:18  Where are you stuck exactly ? Please, provide more information. If you want to start a thread, take a look at the CreateThread function[^] Cédric Moonen Software developer Charting control DbgPrint in user mode Kharfax5-Jul-06 3:20 Kharfax 5-Jul-06 3:20  Hi Question, there is any way to use DbgPrint in user mode, or some similar tool? I need to know if certain parts of my code are beign executed without stopping execution. All I can think is writting to a file, but the project I'm working on is hooking IO functions and I dont want to use them :S Well, thanks in advance people Re: DbgPrint in user mode earl5-Jul-06 4:24 earl 5-Jul-06 4:24  OutputDebugString works in user mode. See also this nice utility: http://www.sysinternals.com/Utilities/DebugView.html earl Re: DbgPrint in user mode Kharfax5-Jul-06 4:30 Kharfax 5-Jul-06 4:30  Thanks a lot Earl C++ code problem Nirmal Khatri5-Jul-06 3:16 Nirmal Khatri 5-Jul-06 3:16  I am writing some instruction below. can you explain these instruction. and also what these aredo written i.e. for what purpose? //{{AFX_MSG_MAP(CDCApp) // NOTE - the ClassWizard will add and remove mapping macros here. // DO NOT EDIT what you see in these blocks of generated code! //}}AFX_MSG

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