NVIDIA FX4500 User Guide - Page 78
XNVCTRLSetAttributeAndGetStatus(), XNVCTRLQueryAttribute(), False
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Chapter 05 : API Control This function sets the attribute to the given value. Not all attributes require the display_mask parameter. See "NV_CTRL_GVO Attributes" on page 79 for details. Possible errors: BadValue ‐ The screen or attribute doesnʹt exist. BadMatch ‐ The NVIDIA driver is not present on that screen. XNVCTRLSetAttributeAndGetStatus() Bool XNVCTRLSetAttributeAndGetStatus ( Display *dpy, int screen, unsigned int display_mask, unsigned int attribute, int value ); This function is the same as XNVCTRLSetAttribute(), and returns True if the operation succeeds, otherwise False. XNVCTRLQueryAttribute() Bool XNVCTRLQueryAttribute ( Display *dpy, int screen, unsigned int display_mask, unsigned int attribute, int *value ); This function returns True if the attribute exists, otherwise False. If XNVCTRLQueryAttribute returns True, value will contain the value of the specified attribute. Not all attributes require the display_mask parameter. See "NV_CTRL_GVO Attributes" on page 79 for details. Possible errors: BadValue ‐ The screen doesnʹt exist. BadMatch ‐ The NVIDIA driver is not present on that screen. Quadro 4000/5000/6000 SDI DU-05337-001_v01 | 74