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Watching C Variables->Variable Tooltips

You can see a lot of information  about C variables by using the Variable Tooltip.  The Variable Tooltip is active when the mouse is over a source code window.  If the mouse stops over a variable name for more than half a second, the Tooltip collects any debug information associated with the variable and displays it in a small pop-up window next to the mouse cursor.

  

The Tooltip takes the decimal/hexadecimal attributes from the watch windows.  If the variable is a local variable currently in scope, then the value and address are displayed in decimal or hexadecimal in accordance with the settings for the Locals window.  If the variable is not a local variable, then the value and address are displayed in decimal or hexadecimal in accordance with the settings for the most recently active Watch window.