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1.1 root 1: /*==============================================================*\
2: * Init.c - routines for initialization and exit processing
3: * Created 1989, 1990 Microsoft Corp.
4: *--------------------------------------------------------------
5: *
6: * This module contains the code for application initialization
7: * as well as the code for exit list processing
8: *
9: *--------------------------------------------------------------
10: *
11: * This source file contains the following functions:
12: *
13: * Init() - initialization routines
14: * InitMainWindow(hwnd, mp1, mp2)
15: * ExitProc(usTermCode) - exit list processing procedure
16: *
17: \*==============================================================*/
18:
19: /*--------------------------------------------------------------*\
20: * Include files, macros, defined constants, and externs
21: \*--------------------------------------------------------------*/
22:
23: #define INCL_WINWINDOWMGR
24: #define INCL_DOSPROCESS
25:
26: #include <os2.h>
27: #include <string.h>
28: #include "main.h"
29: #include "xtrn.h"
30:
31: /*--------------------------------------------------------------*\
32: * Global variables
33: \*--------------------------------------------------------------*/
34:
35:
36: /*--------------------------------------------------------------*\
37: * Entry point declarations
38: \*--------------------------------------------------------------*/
39:
40: /****************************************************************\
41: * Initialization routine
42: *--------------------------------------------------------------
43: *
44: * Name: Init()
45: *
46: * Purpose: Performs initialization functions required
47: * before the main window can be created.
48: *
49: * Usage: Called once before the main window is created.
50: *
51: * Method:
52: * - installs the routine ExitProc into the
53: * DosExitList chain
54: * - registers all window classes
55: * - performs any command line processing
56: *
57: * Returns:
58: * TRUE - initialization is successful
59: * FALSE - initialization failed
60: \****************************************************************/
61: BOOL Init(VOID)
62: {
63:
64: /* Add ExitProc to the exit list to handle the exit processing. If
65: * there is an error, then terminate the process since there have
66: * not been any resources allocated yet
67: */
68: if(DosExitList(EXLST_ADD, (PFNEXITLIST)ExitProc)) {
69: MessageBox(HWND_DESKTOP,
70: IDMSG_CANNOTLOADEXITLIST,
71: MB_OK | MB_ERROR,
72: TRUE);
73: DosExit(EXIT_PROCESS, RETURN_ERROR);
74: }
75:
76: /* initialize the print dialog structures */
77: InitPrintingDialogs();
78:
79: /* load application name from resource file */
80: if(!WinLoadString(hab, NULL, IDS_APPNAME, MAXNAMEL, szAppName))
81: return FALSE;
82:
83: /* load "untitled" string */
84: if(!WinLoadString(hab, NULL, IDS_UNTITLED, MESSAGELEN, szUntitled))
85: return FALSE;
86:
87: /* register the main client window class */
88: if(!WinRegisterClass(hab,
89: (PSZ)szAppName,
90: (PFNWP)MainWndProc,
91: CS_SIZEREDRAW | CS_CLIPCHILDREN,
92: 0)) {
93: return FALSE;
94: }
95:
96: /* If you wish to create a thread for background processing, define
97: * the BACKGROUND_THREAD constant
98: * the routine commented out here. The routines for the background
99: * thread are in the thrd.c file.
100: */
101:
102: #ifdef BACKGROUND_THREAD
103: /* see main.h for comment on using a background thread */
104:
105: if(!CreateBackgroundThread())
106: return FALSE;
107:
108: #endif
109:
110: /*--------------------------------------------------*\
111: * Add any command line processing here
112: \*--------------------------------------------------*/
113:
114:
115: return TRUE;
116:
117: } /* Init() */
118:
119: /****************************************************************\
120: * Initialization routine
121: *--------------------------------------------------------------
122: *
123: * Name: InitMainWindow(hwnd, mp1, mp2)
124: *
125: * Purpose: Performs initialization functions required
126: * when the main window is created.
127: *
128: * Usage: Called once during the WM_CREATE processing when
129: * the main window is created.
130: *
131: * Method:
132: *
133: * Returns: value to be returned from the WM_CREATE message:
134: * TRUE - window creation should stop
135: * FALSE - window creation should continue
136: \****************************************************************/
137: MRESULT InitMainWindow(hwnd, mp1, mp2)
138: HWND hwnd; /* handle to the main client window */
139: MPARAM mp1; /* first parameter of WM_CREATE message */
140: MPARAM mp2; /* second parameter of WM_CREATE message */
141: {
142:
143: UpdateTitleText(((PCREATESTRUCT)PVOIDFROMMP(mp2))->hwndParent);
144:
145: /* return FALSE to continue window creation, TRUE to abort it */
146: return (MRESULT)FALSE;
147:
148:
149:
150: /* This routine currently doesn't use the hwnd, mp1, and mp2 parameters *\
151: * so they are referenced here to prevent an 'Unreferenced Parameter'
152: \* warning at compile time */
153:
154: hwnd;
155: mp1;
156: mp2;
157:
158:
159: } /* InitMainWindow() */
160:
161:
162: /****************************************************************\
163: * Exit list processing procedure
164: *--------------------------------------------------------------
165: *
166: * Name: ExitProc(usTermCode)
167: *
168: * Purpose: Cleans up certain resources when the application
169: * terminates
170: *
171: * Usage: Routine is called by DosExitList when the
172: * application exits
173: *
174: * Method: global resources, such as the main window and
175: * message queue, are destroyed and any system
176: * resources used are freed
177: *
178: * Returns: Returns EXLST_EXIT to the DosExitList handler
179: *
180: \****************************************************************/
181:
182: VOID PASCAL ExitProc(usTermCode)
183: USHORT usTermCode; /* code for the reason for termination */
184: {
185:
186: /* destroy the main window if it exists */
187: if(WinIsWindow(hab, hwndMainFrame)) {
188: WinDestroyWindow(hwndMainFrame);
189: }
190:
191: /*--------------------------------------------------*\
192: * Any other system resources used
193: * (e.g. memory or files) should be freed here
194: \*--------------------------------------------------*/
195:
196:
197: WinDestroyMsgQueue(hmq);
198:
199: WinTerminate(hab);
200:
201: DosExitList(EXLST_EXIT, 0L); /* termination complete */
202:
203:
204:
205: /* This routine currently doesn't use the usTermCode parameter so *\
206: * it is referenced here to prevent an 'Unreferenced Parameter'
207: \* warning at compile time */
208:
209: usTermCode;
210:
211: } /* ExitProc() */
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