GNU/Linux man pages
Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :
GNU/Linux |
CentOS 5.3 |
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XDeviceBell(3x) |
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XDeviceBell − ring a bell on a device supported through the input extension
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Status XDeviceBell(Display *display, XDevice *device, XID *feedbackclass, XID *feedbackid, int *percent); |
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display |
Specifies the connection to the X server. | ||
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device |
Specifies the device with which the bell is associated. |
feedbackclass
Specifies the class of the feedback with which the bell is associated.
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feedbackid |
Specifies the id of the feedback with which the bell is associated. | ||
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percent |
Specifies the volume in the range -100 to 100 at which the bell should be rung. |
The XDeviceBell request causes the server to ring a bell on the specified feedback of the specified device, if possible. The specified volume is relative to the base volume for the bell. If an invalid device is specified, a BadDevice error will be returned. The feedbackclass and feedbackid parameters contain values returned by an XGetFeedbackControl request and uniquely identify the bell to ring. If a feedbackclass is specified that does not support a bell, or if a nonexistent feedbackid is specified, or a percent value is specified that is not in the range -100 to 100, a BadValue error will be returned.
The volume at which the bell is rung when the percent argument is nonnegative is:
base − [(base * percent) / 100] + percent
The volume at which the bell rings when the percent argument is negative is:
base + [(base * percent) / 100]
To change the base volume of the bell, use XChangeFeedbackControl.
XDeviceBell can generate a BadDevice or a BadValue error.
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BadDevice |
An invalid device was specified. The specified device does not exist, or has not been opened by this client via XOpenInputDevice. | ||
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BadValue |
An invalid feedbackclass, feedbackid, or percent value was specified. |
XChangeFeedbackControl(3X),
XBell(3X)
Programming With Xlib
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XDeviceBell(3x) | |