1 /****************************************************************************
3 * SciTech OS Portability Manager Library
5 * ========================================================================
7 * The contents of this file are subject to the SciTech MGL Public
8 * License Version 1.0 (the "License"); you may not use this file
9 * except in compliance with the License. You may obtain a copy of
10 * the License at http://www.scitechsoft.com/mgl-license.txt
12 * Software distributed under the License is distributed on an
13 * "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
14 * implied. See the License for the specific language governing
15 * rights and limitations under the License.
17 * The Original Code is Copyright (C) 1991-1998 SciTech Software, Inc.
19 * The Initial Developer of the Original Code is SciTech Software, Inc.
20 * All Rights Reserved.
22 * ========================================================================
28 * Description: Test program to check the ability to install an assembly
29 * language mouse interrupt handler. We use assembly language
30 * as it must be a far function and should swap to a local
31 * 32 bit stack if it is going to call any C based code (which
32 * we do in this example).
34 * Functions tested: PM_installMouseHandler()
38 ****************************************************************************/
44 volatile long count = 0;
46 #pragma off (check_stack) /* No stack checking under Watcom */
48 void PMAPI mouseHandler(
56 mask = mask; /* We dont use any of the parameters */
70 printf("Program running in ");
71 switch (PM_getModeType()) {
73 printf("real mode.\n\n");
76 printf("16 bit protected mode.\n\n");
79 printf("32 bit protected mode.\n\n");
83 regs.x.ax = 33; /* Mouse function 33 - Software reset */
84 PM_int86(0x33,®s,®s);
86 printf("No mouse installed.\n");
90 /* Install our mouse handler and lock handler pages in memory. It is
91 * difficult to get the size of a function in C, but we know our
92 * function is well less than 100 bytes (and an entire 4k page will
93 * need to be locked by the server anyway).
95 PM_lockCodePages((__codePtr)mouseHandler,100,&lh);
96 PM_lockDataPages((void*)&count,sizeof(count),&lh);
97 if (!PM_setMouseHandler(0xFFFF, mouseHandler)) {
98 printf("Unable to install mouse handler!\n");
101 printf("Mouse handler installed - Hit any key to exit\n");
104 PM_restoreMouseHandler();
105 PM_unlockDataPages((void*)&count,sizeof(count),&lh);
106 PM_unlockCodePages((__codePtr)mouseHandler,100,&lh);
107 printf("Mouse handler was called %ld times\n", count);