The Button object is a child object of the Camera system object and is used to display the Button over the video image received from the parent camera. This page describes how to configure the appearance of a Button, as well as how to choose the action that will occur when the Button is clicked.

The Buttons display in the Video surveillance monitor must be enabled beforehand. If no Button objects are created in the system, they are not displayed.

To configure the Button object, do the following:

1. Go to the Hardware tab of the System settings dialog window (1).
2. Create the Button object on the basis of the Camera object (2).
   
   
3. Configure the position and display of the Button in the Surveillance window:
   1. the position of the top left corner of the Button is set by the X and Y fields (3). X is the horizontal indent from the left border as a percentage, Y is the vertical indent from the top border as a percentage. For example, if you set 50 and 50, then the left top corner of the Button will be in the middle of the Surveillance window.
      
      
   2. in the Width and Height fields (4), set the size of the button as a percentage of the size of the Surveillance window.
   3. set the Rotation angle of the Button in degrees from -180 to 180. By default, it is assumed that the button isn't rotated, the angle is zero (5).

   4. set the Transparency level of the Button as a percentage (6). The feature of this setting: the real transparency will be displayed in the preview area (7) only when transparency is being edited with the slider. The rest of the time, the Button is completely opaque during configuring.
      
      

      You can configure the size and position of the Button not only by entering values, but also manually. To do this, in the preview area, after clicking the Button, you can: drag the Button with the mouse; stretch or shrink the Button, and rotate it, using the green anchor points on its perimeter. You can fine-tune the Button size and rotation angle manually: when Shift is pressed and when you drag the green circle with the mouse, the Button will change only its size. When Ctrl is pressed, the Button will change only its angle. When Shift+Ctrl are pressed, the Button won't change.

      
      

   5. set the Drawing order of the configured Button in the corresponding field if several Buttons are created for one Camera (8). The setting determines the order in which the Buttons are drawn in the Surveillance window.

4. Select the Button action—what will happen when the Operator clicks the Button in the Monitor (9):
   1. Switch between the video images of the cameras. The cameras that will be controlled by the Button must be added to the Monitor (see Selecting and configuring video cameras), otherwise you won’t be able to switch between the video images when you click the Button.
   2. Execute macros. The macros must be created beforehand (see Creating and using macros).
   3. No action.
5. From the Parameters drop-down list (10), select a specific action when clicking the Button. Possible values are determined by what action was selected in the previous step: it can be both available macros and the list of cameras between which you can switch.

6. If necessary, set the Button label in the corresponding field (11). To display a default label for the Button depending on the selected action, click the Default button (12). In this case, the label will contain the name of the camera, macro or current object.
   

   In the Video surveillance monitor interface, the label is displayed only as a tooltip when you hover the cursor over the Button.

   
   

7. Click the  button.

As a result, the Monitor will display the Button over the video image received from the Camera on the basis of which this Button was created.