IsMaster

Description

Checks if the application has an exclusive control over the selected camera.


Syntax

[VB]
Value=objActiveGige.IsMaster 

[C/C++]
HRESULT IsMaster( BOOL pValue );


Data Types [VB]

Return value: Boolean


Parameters [C/C++]

pValue [out, retval]

Pointer to the boolean value which is TRUE if the application has an exclusive control and FALSE otherwise

Return Values

S_OK

Success

E_FAIL

Failure

Example

This VB example checks the status of the camera control to enable or disable the exposure slider:

if IsMaster then

Slider1.Enable(TRUE)

else

Slider1.Enable(FALSE)

endif

      
Remarks

This method is usually used in combination with the Multicast property. When the camera is set in the Multicast mode, only the master application (the one that was launched first and initiated the multicast) can control the camera settings. Other applications that typically run on other computers in the network can display the video and report camera parameters, but cannot modify them. The IsMaster method can be used to find out if an application works in the slave mode and disable some user interface elements.

In the unicast mode this method can be used to display an error message when a second application or process is trying to get an access to the same camera.