mmsystem h

following describes the above three steps for directsound: 1. there are two ways to add a warehouse receiving connection. You can select the setting option in the project menu bar and write it in the column connecting this item object to the library module. Dsound. Lib dxguid. Lib two strings; you can also put these two strings in the workspace by adding files. 2. Add the The directsound class name cannot be identified. Check the folder settings in the setting options of the tool menu item

);Waveoutclose (hwaveout );Localunlock (m_hformat );Localfree (m_hformat );Delete [] lpdata;Note: 1) the declaration of the above audio device and sound file operation function is included in mmsystem. the # include "mmsystem. H "statement to add the header file. At the same time, you must add dynamic connection import and export to winmm during compilation. lib. The specific implementation method is to se

audio fileIf (waveoutopen ( hwaveout, devsnum, lpformat, null, null, callback_null )! = 0){// Failed to open the wave out devices}// Prepare the data to be playedPwaveouthdr. lpdata = (hpstr) lpdata;Pwaveouthdr. dwbufferlength = m_wavelong;Pwaveouthdr. dwflags = 0;If (waveoutprepareheader (hwaveout, pwaveouthdr, sizeof (wavehdr ))! = 0){// Failed to prepare the wave data buffer}// Play the audio data fileIf (waveoutwrite (hwaveout, pwaveouthdr, sizeof (wavehdr ))! = 0){// Failed to write the

}// Disable the audio output device and release the memoryWaveoutreset (hwaveout );Waveoutclose (hwaveout );Localunlock (m_hformat );Localfree (m_hformat );Delete [] lpdata;Note: 1) the declaration of the above audio device and sound file operation function is included in mmsystem. the # include "mmsystem. H "statement to add the header file. At the same time, you must add dynamic connection import and expo

("mysound. wav", snd_async ); Note: when using the playsound function, you need to add winmm. lib and the header file mmsystem. h.Setting method:In the VC compiler, choose Project> setting> link> Object/library modules and add winmm. lib to the edit box.Add the statement # include The playsound function is used to play wav files in VC.1. Function details:The playsound function is declared as follows:Bool playsound (lpcstr pszsound, hmodule hmod, DWO

This problem occurs because some header files must contain the windows. h header files. For example, when mmsystem. h is used. # Ifndef setjmp_test_h# Define setjmp_test_h# Include # Ifdef _ cplusplusExtern "C "{# Endif# Define maxtask 20/* Maximum number of tasks */# Define taskid unsigned charTypedef void (* functask) (void );Enum taskstatus {Ready = 0,/*** create a task waiting for CPU **/Runing,/******* the task is running *******/Suspend,/*******

, which contains several API instructions and calls. That's easy to find. Let's take a look at the APIS it uses: auxGetNumDevs, auxGetDevCaps, auxSetVolume, and auxGetVolume. It looks like these Apis. Use the file search function provided by windows to search for files with auxSetVolume *. pas in all Delphi source code and control source code, only in mmsystem. pas. Check out the relevant statements. I did not know enough about delphi. I forgot to che

started.Program.Solution:A. If you are on the console, You can temporarily copy a copy of copy userinit.exe userinit32.exe.B 、if you can modify the registration table in the window, search for all userinit32.exeand change it to userinit.exe 6. Delete the mmsystem content in the run entry in the registry. The content is C:/winnt/rundll.exe mmsystem. dll ....Location: HKEY_LOCAL_MACHINE/software/Microsoft/

(program list 1.2 ). The second version (program list 1.3) can run in any system as long as there is a built-in speaker. You 'd better run both programs, because you should try to understand the messagebeep process as much as possible. Program list 1.2 chimes. cpp Program // Program CHIMES.CPP#defineSTRICT#include The chimes program calls a function sndplaysound, which is part of the Windows multimedia category. This function is used to play wav files. Note the # define strict directive in

I tried to implement this function and found a lot of information, which was not powerful. Finally, I found that what Microsoft gave was usable, in general, the mixer API is used to open the mixer device, obtain audio line information, and then set attributes. After this is done, it can be used in programs you write, such as players. There are several functions in total: Through these nine APIs, we can control the audio input and output devices. In fact, you can define these functions in C: /pr

If you're doing some sort of multimedia player program, in order to improve the fault tolerance of the system, we must use some detection system functions, which detect whether the existence of a sound card is a problem, the following procedures to help you busy, first of all need to join the uses part of the MMSystem, and then detect the sound card when the form is created: procedure TForm1.FormCreate(Sender: TObject);var i:Integer;begini := auxGetN