Topic       : TOS - The Operating System
Author      : 
Version     : tos.hyp (December 19, 2008)
Subject     : Programmieren/Atari
Nodes       : 3010
Index Size  : 93790
HCP-Version : 5
Compiled on : Atari
@charset    : atarist
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@default    : Title
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View Ref-File7.7.3  vex_curv                                                    TOS

 Name:         »Exchange cursor change vector« - Adapt the interrupt 
               vector for cursor pointer drawing.

 Opcode:       127

 Syntax:       void vex_curv ( int16_t handle, int16_t (*pusrcode)(), 
               int16_t (**psavcode)() );

 Description:  The call vex_curv permits the installation of a routine 
               that is called each time a mouse pointer is drawn, 
               allowing a customized mouse pointer form to replace 
               that drawn by the system. The following apply:

                Parameter  Meaning

                handle     Workstation identifier
                pusrcode   Address of the new routine
                psavcode   Address of the old routine

               The routine will be called if the mouse is moved and 
               d0.w/d1.w contain the coordinates of the mouse cursor. 
               The subroutine must save and restore modified registers 
               and call the old interrupt routine.

               Note: The input functions of the VDI work only on the 
               physical workstation, which is normally used by the 
               AES.

 Return value: The function does not return a result.

 Availability: Supported by all screen drivers.

 Group:        Input functions

 See Also:     Binding   vex_timv   vex_butv   vex_motv