The system automatically displays a cursor for the mouse and updates its position on the screen. You can obtain current screen coordinates of the cursor and move the cursor to any location on the screen by using the GetCursorPos and SetCursorPos functions, respectively.
You can also retrieve the handle to the current cursor by using the GetCursor function and you can set the cursor by using the SetCursor function. After you call SetCursor, the appearance of the cursor does not change until either the mouse moves, the cursor is explicitly set to a different cursor, or a system command is executed.
When the user moves the mouse, the system redraws the cursor at the new location. The system automatically redraws the cursor design associated with the window to which the cursor is pointing.
You can hide and redisplay the cursor, without changing the cursor design, by using the ShowCursor function. This function uses an internal counter to determine when to hide or display the cursor. An attempt to show the cursor increments the counter; an attempt to hide the cursor decrements the counter. The cursor is visible only if this counter is greater than or equal to zero.