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Re: Preventing MDI Child Wnd Resizing Steen Krogsgaard1-Nov-01 1:35 Steen Krogsgaard 1-Nov-01 1:35  Prevent resizing: handle WM_GETMINMAXINFO. Prevent cursor changing over border: handle WM_NCHITTEST. See MSDN for specifics. WM_SIZE is send when the sizing operation is finished. That's why it doesn't work for you. Cheers Steen. "To claim that computer games influence children is rediculous. If Pacman had influenced children born in the 80'ies we would see a lot of youngsters running around in dark rooms eating pills while listening to monotonous music" Re: Preventing MDI Child Wnd Resizing Chambers1-Nov-01 2:15 Chambers 1-Nov-01 2:15  Thank you once more for helping me out, the answer was exactly what I`m looking for, another "this helped" for you Steen. Cheers, Alan. AEGC Re: Preventing MDI Child Wnd Resizing Steen Krogsgaard1-Nov-01 2:47 Steen Krogsgaard 1-Nov-01 2:47  I found a couple more windows messages that might come in handy: WM_ENTERSIZEMOVE WM_EXITSIZEMOVE WM_SIZING WM_MOVING Cheers Steen. "To claim that computer games influence children is rediculous. If Pacman had influenced children born in the 80'ies we would see a lot of youngsters running around in dark rooms eating pills while listening to monotonous music" Sending string between two apps 31-Oct-01 6:08 31-Oct-01 6:08  Hi I'm already getting mad, I hope someone can help me I want to send a sting beween two applications. What I have so far is: const UINT WM_MYAPP = RegisterWindowMessage("unique id"); . . . char server[] = "something"; char ip[] = "111.222.333.444"; PostMessage(HWND_BROADCAST, WM_MYAPP, (WPARAM)server, (LPARAM)ip); But in newsgroups I read that I is not possible to exchange strings using this method. Here http://www.codeproject.com/threads/ipc_tute.asp is a good example that works but it uses memory mapped files and is a bit too complex for my purpose. Is there no easier way to exchange strings between two applications? regards Re: Sending string between two apps #realJSOP31-Oct-01 6:12 #realJSOP 31-Oct-01 6:12  Use the WM_COPYDATA message. I believe there are a few articles here on CodeProject about doing just such a thing. "...the staggering layers of obscenity in your statement make it a work of art on so many levels." - Jason Jystad, 10/26/2001 Re: Sending string between two apps 31-Oct-01 6:26 31-Oct-01 6:26  I will try it, thanks Re: Sending string between two apps 31-Oct-01 6:50 31-Oct-01 6:50  Thanks a lot, it works fine However, I have one more question: I use HWND_BRODCAST to send the message system-wide. But since PostMessage cannot be used with WM_COPYDATA I need to use SendMessage. But MSDN says: "...function calls the window procedure for the specified window and does not return until the window procedure has processed the message" so how will be program be slowed down? how long does it take until the program can process with the following code? regards Re: Sending string between two apps #realJSOP31-Oct-01 7:10 #realJSOP 31-Oct-01 7:10  1) If you have the source code to both apps, you don't need to use HWND_BROADCAST. You can use the HWND of the target application. I assume you have the source to both programs, otherwise trading WM_COPYDATA messages back and forth would not be doable. 2) The Windows API does not restrict you from using PostMessage to send the WM_COPYDATA message. 3) There are two versions of SendMessage. a) SendMessage - Uses the default timeout of five secons before timing out. b) SendMessageEx - allows you to specify the timeout duration (in milliseconds). "...the staggering layers of obscenity in your statement make it a work of art on so many levels." - Jason Jystad, 10/26/2001 Re: Sending string between two apps 31-Oct-01 7:21 31-Oct-01 7:21  point 1) I only have the sourcecode from the app which needs to get the string. A friend of mine wrote a program in delphi but I don't have access to the source. So I told him just to input the WM_COPYDATA function into his app in order to send me necessary data from his app into my app point 2) MSDN says: An application must use theSendMessage function to send this message, not thePostMessage function. I tried with PostMessage and it did not work point 3b) what happens, if the function times out? Will no application get the WM_COPYDATA message? Re: Sending string between two apps #realJSOP31-Oct-01 8:11 #realJSOP 31-Oct-01 8:11  1) He should be able to get your apps hwnd if he knows the window title (or scans the task list for the module name. 2) I guess I can understand that. Postmessage returns immediately, so there's a real good chance that the receiving app won't have time to process the string. 3b) In the event of a timeout, Sendmessage (and SendMessageEx) both return FALSE. "...the staggering layers of obscenity in your statement make it a work of art on so many levels." - Jason Jystad, 10/26/2001 Re: Sending string between two apps Chris Losinger31-Oct-01 6:14 Chris Losinger 31-Oct-01 6:14  you could use the clipboard, with a custom data type. -c http://www.smalleranimals.com Re: Sending string between two apps Nish Nishant31-Oct-01 6:18 Nish Nishant 31-Oct-01 6:18  1) use the clipboard 2) create a temp file 3) use the registry [dont forget to delete the temp keys you make] Re: Sending string between two apps #realJSOP31-Oct-01 7:11 #realJSOP 31-Oct-01 7:11  You forgot: 4) Use WM_COPYDATA. "...the staggering layers of obscenity in your statement make it a work of art on so many levels." - Jason Jystad, 10/26/2001 Re: Sending string between two apps Chris Losinger31-Oct-01 7:38 Chris Losinger 31-Oct-01 7:38  5) use DDE -c http://www.smalleranimals.com Re: Sending string between two apps #realJSOP31-Oct-01 8:26 #realJSOP 31-Oct-01 8:26  6) Named pipes 7) Memory-mapped files "...the staggering layers of obscenity in your statement make it a work of art on so many levels." - Jason Jystad, 10/26/2001 Re: Sending string between two apps Carlos Antollini31-Oct-01 9:08 Carlos Antollini 31-Oct-01 9:08  8) RPC Carlos Antollini. Re: Sending string between two apps 31-Oct-01 9:12 31-Oct-01 9:12  9) UPS 10) Federal Express 11) US Postal Service Re: Sending string between two apps Carlos Antollini31-Oct-01 9:24 Carlos Antollini 31-Oct-01 9:24  Its true!!! The use will be in this mode... ::SendMessage(yourAddress, theBox, company, type); Carlos Antollini. Re: Sending string between two apps 1-Nov-01 2:23 1-Nov-01 2:23  You guys are crazy Thanks to everybody for his help Re: Sending string between two apps Nish Nishant31-Oct-01 17:52 Nish Nishant 31-Oct-01 17:52  Yeah... Nish how to detect dialog's actual control? 31-Oct-01 5:30 31-Oct-01 5:30  how i have to detect dialog control i want to disable is not focused one? (i have to move to nextdlgctrl than) i see no getactdlgctrl or similar resp. main problem is GetDlgItem(ID_MYCONTROL)->Enablewindow(FALSE); not moves to next control automaticaly (has to?) i have no special nextctrl handler thanks for reply t! Re: how to detect dialog's actual control? 1-Nov-01 20:23 1-Nov-01 20:23  and it seems disabling actual button it brings problems with dialog hotkeys disabling - during already opened dialog t! Retrieving registry values Steven Gregg31-Oct-01 5:18 Steven Gregg 31-Oct-01 5:18  Have the following code as part of my DLL running on NT Workstation. For some reason it opens the registry key OK but can't Query the value. The value is definately in the registry. Interestingly, when I cut and paste the code into a standalone .exe it works fine. Anyone any ideas...is it a problem with UNICODE or similar? //GET REGISTRY INFORMATION FOR DATABASE NAME // HKEY hKey; if (ERROR_SUCCESS == RegOpenKeyEx( HKEY_LOCAL_MACHINE, "SOFTWARE\\COMPANY\\PRODUCT", 0, KEY_QUERY_VALUE, &hKey ) ) { DWORD dwBufLen; char szDBName[256]; if (ERROR_SUCCESS == RegQueryValueEx( hKey, "DatabaseName", NULL, NULL, (LPBYTE) szDBName, &dwBufLen) ) { OtherFunction(szDBName); } else { OtherFunction("\\default\\Data\\MyDatabase"); } RegCloseKey( hKey ); } else { OtherFunction("\\default\\Data\\MyDatabase"); } Cheers Steevie Re: Retrieving registry values Michael Dunn31-Oct-01 8:28 Michael Dunn 31-Oct-01 8:28  DWORD dwBufLen; char szDBName[256]; You need to init dwBufLen to the size of your data buffer so the API knows how large your buffer is. char szDBName[256]; DWORD dwBufLen = sizeof(szDBName); --Mike-- http://home.inreach.com/mdunn/ If there's something strange / in your VC code / Who you gonna call? / Ghostbusters! your with and Dependency Walker / DLL functions -Dy31-Oct-01 4:30 -Dy 31-Oct-01 4:30  Hi all, Does anyone know how I can find out what is available from a DLL in code? I can find out what DLL's an app/dll requires (cause I got the code from MSDN ), but I'd like to take this a step further and find out what the DLL offers and what gets used by a calling app/dll. Much like the way Dependency Walker does it... Cheers, Dylan

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