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Re: Export function Rashid Thadha26-Sep-01 11:36 Rashid Thadha 26-Sep-01 11:36  Don't mix standard DLL exports with In-Proc (DLL) COM Servers. It won't work !!!! Audio program works under Win2k but not Win98 groston26-Sep-01 4:47 groston 26-Sep-01 4:47  The source code shown below is a simple, working wav file player application. The program work perfectly under Windows 2000, but fails in a repeatable fashion under Windows 98. Let me briefly describe the functionality, then describe a mode of operation that works properly under both OS'es, then a mode of operation that fails only under Windows 98. When the program is started, the wav memory structures are initialized (WM_CREATE calls CreatePlayer). When a file is to be played, Play() is called. This routine opens the file "test.wav" (a 44.1 kHz sampled, stereo file), prepares the headers and fills the first set of buffers. As the wav device renders each buffer, it send a MM_WOM_DONE message to its callback routine. This routine sends a WM_COMMAND message to the main program, which then calls ReadBuffer() to refill the just-emptied buffer. When there is no more data to be read from the file, ReadBuffer() returns a 1, signaling the main program that the file has been completely rendered. The main program then sends a Stop(), which closes the wav device. Note that Stop() does not free any memory as Play() can be called again. Under both OS'es, if the a file is Play()'ed then Stop()'ed, it can be Play()'ed again without any problems. This is as expected. Under Win2k, if a file is allowed to Play() to completion, clicking Play() again causes the file to be Play()'ed. This is as expected. However, under Win98, when a file is allowed to Play() to completion, clicking Play() results in waveOutPrepareHeader() returning with an error, MMSYSERR_NOMEM, and the file does not Play(). I have tried a number of ways to solve this problem, including using memory locking, freeing and reallocating memory each time the player Stop()'s, etc. I haven't a clue as to why this is failing in this manner. Your thoughts and suggestions are gratefully accepted! === source code === #include <windows.h> #include <winuser.h> #include <mmsystem.h> #include <stdio.h> #define NBUFS_OUT 4L #define OUTBUFSIZE 0x4000L #define ID_DONEBUFFER 40000 #define ID_CLOSED 40001 #define ID_PLAY_BUT 40002 #define ID_STOP_BUT 40003 #define WAVE_PLAYING 1 #define WAVE_READY 2 long doneBufCnt = 0; FILE *fp = NULL; HWND hWnd = NULL; HWAVEOUT hWaveOutDevice; WAVEFORMATEX waveOutFormatEx; WAVEHDR waveOutHdrs[NBUFS_OUT]; HINSTANCE myhInstance; /////////////////////////////////////////////////////////////////////////////// void CALLBACK WaveOutCallback (HWAVEOUT hwo, UINT uMsg, DWORD dwInstance, DWORD dwParam1, DWORD dwParam2) /////////////////////////////////////////////////////////////////////////////// { switch (uMsg) { case MM_WOM_OPEN: // device opened via waveOutOpen(), nothing to do break; case MM_WOM_DONE: // device done playing data sent via waveOutWrite() SendNotifyMessage (hWnd, WM_COMMAND, ID_DONEBUFFER, ((WAVEHDR *)dwParam1)->dwUser); break; case MM_WOM_CLOSE: // device closed via waveOutClose() SendNotifyMessage (hWnd, WM_COMMAND, ID_CLOSED, 0L); break; } } /////////////////////////////////////////////////////////////////////////////// long ReadBuffer (long curBuf) /////////////////////////////////////////////////////////////////////////////// { if ((waveOutHdrs[curBuf].dwBufferLength = fread (waveOutHdrs[curBuf].lpData, 1, OUTBUFSIZE, fp)) != OUTBUFSIZE) { if (feof (fp)) doneBufCnt++; } else waveOutWrite (hWaveOutDevice, &waveOutHdrs[curBuf], sizeof (WAVEHDR)); if (doneBufCnt == NBUFS_OUT) { doneBufCnt = 0; return 1; } return 0; } /////////////////////////////////////////////////////////////////////////////// void CreatePlayer (void) /////////////////////////////////////////////////////////////////////////////// { long myInt; fp = fopen ("test.wav", "rb"); waveOutFormatEx.wFormatTag = WAVE_FORMAT_PCM; waveOutFormatEx.nChannels = 2; waveOutFormatEx.nSamplesPerSec = 44100; waveOutFormatEx.nAvgBytesPerSec = 176400; waveOutFormatEx.nBlockAlign = 4; waveOutFormatEx.wBitsPerSample = 16; waveOutFormatEx.cbSize = (WORD)0; for (myInt = 0; myInt < NBUFS_OUT; ++myInt) { memset (&waveOutHdrs[myInt], 0, sizeof (WAVEHDR)); waveOutHdrs[myInt].lpData = (char *)calloc (OUTBUFSIZE, sizeof(char)); waveOutHdrs[myInt].dwUser = myInt; waveOutHdrs[myInt].dwBufferLength = OUTBUFSIZE; } } ///////////////////////////////////////////////////////////////////////// void Play (void) /////////////////////////////////////////////////////////////////////////////// { long myInt; DWORD dwInstance = 0; fseek (fp, 44, SEEK_SET); waveOutOpen ((LPHWAVEOUT)&hWaveOutDevice, WAVE_MAPPER, &waveOutFormatEx, (DWORD)WaveOutCallback, dwInstance, CALLBACK_FUNCTION); waveOutPause (hWaveOutDevice); for (myInt=0; myInt CListCtl otvac26-Sep-01 4:29 otvac 26-Sep-01 4:29  Is there a better (faster) way to load/reload/refresh a report type of CList than looping the Recordset and adding the items. When the recordset is large, it seems to take a long time to fill the CList. Here's what I'm doing now: m_pSet->MoveFirst(); while (!m_pSet->IsEOF) { Add Items to the CList here } m_pSet->MoveNext(); Thanks! Richard Re: CListCtl Michael P Butler26-Sep-01 5:02 Michael P Butler 26-Sep-01 5:02  How many items are you putting into the CListCtrl? Too many and CListCtrl does slow down. Does it make any difference if you load the data into a collection class first and fill the listctrl from the collection? Michael Re: CListCtl Tomasz Sowinski26-Sep-01 6:43 Tomasz Sowinski 26-Sep-01 6:43  C'mon Michael - do you really think that putting data into std::something or CxxxArray first, then copying everything into CListCtrl will help? Tomasz Sowinski -- http://www.shooltz.com Re: CListCtl Michael P Butler26-Sep-01 8:37 Michael P Butler 26-Sep-01 8:37  I dunno. It was a pretty dumb suggestion now I think about it. He has emailed me since that there are several thousand entries. Obviously a list control isn't designed for that number of records at once. Who'd want to look through so many records? Putting into a collection class will at least mean he can load 200 records, display them, load the next 200 into the collection and display them when needed. Michael Re: CListCtl Tomasz Sowinski26-Sep-01 8:47 Tomasz Sowinski 26-Sep-01 8:47  I think it should work with few thousand items without much problems. But it would be helpful to call SetRedraw(FALSE) before inserting data into control and SetRedraw(TRUE) afterwards. Storing data in a collection makes sense when you're using owner-data list control. Anyway, I probably should write that under original post Tomasz Sowinski -- http://www.shooltz.com Re: CListCtl Rashid Thadha26-Sep-01 11:32 Rashid Thadha 26-Sep-01 11:32  use the virtual database list idea see http://www.codeguru.com/mfc_database/virtual_dblist.shtml Its seems to have the answer you want The browser and the registry 26-Sep-01 4:00 26-Sep-01 4:00  I need to know what browser is the default browser and in what directory is located, so I can call ShellExecute to open some html pages but NOT in the same window. So I guess this information must be stored into the registry, right? So in what keys? Re: The browser and the registry Tomasz Sowinski26-Sep-01 4:07 Tomasz Sowinski 26-Sep-01 4:07  How do you want to force opening .html in new window? Are there any commandline switches you're going to pass to ShellExecute? Tomasz Sowinski -- http://www.shooltz.com Re: The browser and the registry 26-Sep-01 4:18 26-Sep-01 4:18  I'm gonna say instead of ShellExecute(..,"open","page.html",...) wich opens the pages in same windows. ShellExecute(..,"open", "Path_got_from_registry:\\iexplore.exe page.html",...). It opens the pages in separate windows. That I know! Re: The browser and the registry Tomasz Sowinski26-Sep-01 4:23 Tomasz Sowinski 26-Sep-01 4:23  Can't you just pass 'opennew' as a verb instead of 'open'? Tomasz Sowinski -- http://www.shooltz.com Re: The browser and the registry 26-Sep-01 4:32 26-Sep-01 4:32  There is no such parameter as openew to pass to ShellExecute. It's not a smart builed function if u ask me! Re: The browser and the registry Tomasz Sowinski26-Sep-01 6:35 Tomasz Sowinski 26-Sep-01 6:35  There is no such parameter as openew to pass to ShellExecute. You're passing plain string as a verb to ShellExecute. 'opennew' is registered as a .html verb, at least on my W2K machine. It's not a smart builed function if u ask me! Sure. Microsoft should hire you as a consultant. Tomasz Sowinski -- http://www.shooltz.com I forgot: Thanks in advance! 26-Sep-01 4:10 26-Sep-01 4:10  I forgot, sorry! Re: The browser and the registry Tommy H D Svensson31-Oct-01 2:04 Tommy H D Svensson 31-Oct-01 2:04  Call RegQueryValueEx(...) with HKEY_CLASSES_ROOT, "http\\shell\\open\\command", "(Default)" and you should get the path to the application browser running as default. /Tommy in debugger not starts 26-Sep-01 3:36 26-Sep-01 3:36  debug version with execute works fine debug version with debug/run crashes at start what can be reason? thanks for ideas t! Re: in debugger not starts Tomasz Sowinski26-Sep-01 4:02 Tomasz Sowinski 26-Sep-01 4:02  debug version with debug/run crashes at start What's on the stack when program crashes? You should be able to see where exactly your program crashed. Tomasz Sowinski -- http://www.shooltz.com Re: in debugger not starts 26-Sep-01 4:42 26-Sep-01 4:42  thanks very much for interest we found it believe or not i depended on disabled breakpoint, after its removing it starts fine t! Pasting RTF into word automated... Braulio Dez26-Sep-01 3:26 Braulio Dez 26-Sep-01 3:26  Hi, I have taken some RTF in my applicaiton and pasted (using the old way... no COM...) into word ( if you want I can "paste" this little code, just not pasted to avoid boring you), the questions that I have are: - Is possible to free that thing entered in the clipboard after paste it ?, I have: memcpy(pGStr, (const void *) pConstBuf, CellInfo.Text.GetLength()); pConstBuf = NULL; TempStr.ReleaseBuffer(); GlobalUnlock(hGlobal); SetClipboardData(lRTF, hGlobal); CloseClipboard(); GlobalFree(hGlobal); range.Paste(); // After this range.Paste() - The other question is... I´m freeing the things right ( if needed I send the whole little thing ). Thanks, for your pattience and your time..., Bye ! Braulio ShellExecute Steve Thresher26-Sep-01 2:47 Steve Thresher 26-Sep-01 2:47  I have a program that displays all files in a specified directory in my own version of a list control. There is also a button that allows the operator to open any of the files which is achieved by the following command: ShellExecute(NULL,"open",filename,NULL,path,SW_SHOW) For .txt documents a copy of notepad is opened on top of my application which is what I would expect. However for .doc files a copy of Word2000 is opened on top of my application while the document is loaded but then Word disappears behind my application once the document is loaded. Does anybody have any ideas why this would happen? I have tested several other types such as .jpg files which open in Paint Shop Pro behind my application window and .zip files which open in WinZip on top of my application window. Any suggestions about this problem would be greatly appreciated. Steve. Re: ShellExecute Tomasz Sowinski26-Sep-01 3:03 Tomasz Sowinski 26-Sep-01 3:03  It may depend on how program associated with given extension communicates with the shell. Word uses DDE by default, while notepad and WinZip do not - this may be the difference. You can change that in 'File types' property page of folder options. Tomasz Sowinski -- http://www.shooltz.com Re: ShellExecute Oscar Vazquez26-Sep-01 3:30 Oscar Vazquez 26-Sep-01 3:30  Steve: This work fine. ShellExecute(NULL,"open","C:\\temp\\Test.doc",NULL,"C:\\temp",SW_SHOW ); If it don't work in your PC, try opening a .doc file from Explorer. Is you got the some problem, then chek your .doc file Registry assosiation. Multibyte character 26-Sep-01 2:11 26-Sep-01 2:11  why we use multibyte character? and is TCHAR is a multibyte character? What is the relation between it and the unicode? Thx. Re: Multibyte character Anders Molin26-Sep-01 2:42 Anders Molin 26-Sep-01 2:42  Depending on your compiler directives TCHAR is either a char or a wchar_t. if you define UNICODE, the preprocessor changes TCHAR to a wchar_t (a wide char), else it's just a standard char. - Anders Money talks, but all mine ever says is "Goodbye!"

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