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分享VC中如何响铃?
如果我生成的是win32 project
那么我可以用printf("\a");
来响铃，但如果我生成的是MFC Dialog project
该如何响铃呢?
那么我可以用printf("\a");
来响铃，但如果我生成的是MFC Dialog project
该如何响铃呢?
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kugou123 2005-12-26
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BOOL MessageBeep(
UINT uType
);
用这个可以调用一些windows的声音提示
UINT uType
);
用这个可以调用一些windows的声音提示
j805 2005-12-26
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MessageBeep
The MessageBeep function plays a waveform sound. The waveform sound for each sound type is identified by an entry in the registry.
BOOL MessageBeep(
UINT uType
);
Parameters
uType
[in] Sound type, as identified by an entry in the registry. This parameter can be one of the following values. Value Meaning
-1 Simple beep. If the sound card is not available, the sound is generated using the speaker.
MB_ICONASTERISK SystemAsterisk
MB_ICONEXCLAMATION SystemExclamation
MB_ICONHAND SystemHand
MB_ICONQUESTION SystemQuestion
MB_OK SystemDefault
Return Values
If the function succeeds, the return value is nonzero.
If the function fails, the return value is zero. To get extended error information, call GetLastError.
Remarks
After queuing the sound, the MessageBeep function returns control to the calling function and plays the sound asynchronously.
If it cannot play the specified alert sound, MessageBeep attempts to play the system default sound. If it cannot play the system default sound, the function produces a standard beep sound through the computer speaker.
The user can disable the warning beep by using the Sound control panel application.
Terminal Services: To send a beep to a client, use the Beep function. The Beep function is redirected to the client, whereas MessageBeep is not, except on Windows NT 4.0 where MessageBeep(-1) calls Beep.
Example Code
For an example, see Notifying the User of Errors.
Requirements
Client: Included in Windows XP, Windows 2000 Professional, Windows NT Workstation, Windows Me, Windows 98, and Windows 95.
Server: Included in Windows Server 2003, Windows 2000 Server, and Windows NT Server.
Header: Declared in Winuser.h; include Windows.h.
Library: Use User32.lib.
The MessageBeep function plays a waveform sound. The waveform sound for each sound type is identified by an entry in the registry.
BOOL MessageBeep(
UINT uType
);
Parameters
uType
[in] Sound type, as identified by an entry in the registry. This parameter can be one of the following values. Value Meaning
-1 Simple beep. If the sound card is not available, the sound is generated using the speaker.
MB_ICONASTERISK SystemAsterisk
MB_ICONEXCLAMATION SystemExclamation
MB_ICONHAND SystemHand
MB_ICONQUESTION SystemQuestion
MB_OK SystemDefault
Return Values
If the function succeeds, the return value is nonzero.
If the function fails, the return value is zero. To get extended error information, call GetLastError.
Remarks
After queuing the sound, the MessageBeep function returns control to the calling function and plays the sound asynchronously.
If it cannot play the specified alert sound, MessageBeep attempts to play the system default sound. If it cannot play the system default sound, the function produces a standard beep sound through the computer speaker.
The user can disable the warning beep by using the Sound control panel application.
Terminal Services: To send a beep to a client, use the Beep function. The Beep function is redirected to the client, whereas MessageBeep is not, except on Windows NT 4.0 where MessageBeep(-1) calls Beep.
Example Code
For an example, see Notifying the User of Errors.
Requirements
Client: Included in Windows XP, Windows 2000 Professional, Windows NT Workstation, Windows Me, Windows 98, and Windows 95.
Server: Included in Windows Server 2003, Windows 2000 Server, and Windows NT Server.
Header: Declared in Winuser.h; include Windows.h.
Library: Use User32.lib.
xx_jj 2005-12-26
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Beep( 750, 300 );
bobob 2005-12-26
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给多少都可以，差别就是声音听起来不一样
韩雷 2005-12-26
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dwFreq 参数代表频率，正常的频率应该是多少?
谢谢
谢谢
pomelowu 2005-12-26
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BOOL Beep(
DWORD dwFreq,
DWORD dwDuration
);
DWORD dwFreq,
DWORD dwDuration
);
