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1.1 root 1: /*==============================================================*\
2: * Init.c - routines for initialization and exit processing
3: * Created 1990, Microsoft, IBM 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_WINMLE
25: #define INCL_DOSPROCESS
26:
27: #include <os2.h>
28: #include <string.h>
29: #include "sty_main.h"
30: #include "sty_xtrn.h"
31: #include "sty_dlg.h"
32:
33: #define RETURN_ERROR 1 /* error return in DosExit */
34:
35: /*--------------------------------------------------------------*\
36: * Global variables
37: \*--------------------------------------------------------------*/
38: HWND hwndMLE;
39:
40: /*--------------------------------------------------------------*\
41: * Entry point declarations
42: \*--------------------------------------------------------------*/
43:
44: /****************************************************************\
45: * Initialization routine
46: *--------------------------------------------------------------
47: *
48: * Name: Init()
49: *
50: * Purpose: Performs initialization functions required
51: * before the main window can be created.
52: *
53: * Usage: Called once before the main window is created.
54: *
55: * Method:
56: * - installs the routine ExitProc into the
57: * DosExitList chain
58: * - registers all window classes
59: * - performs any command line processing
60: *
61: * Returns:
62: * TRUE - initialization is successful
63: * FALSE - initialization failed
64: \****************************************************************/
65: BOOL Init(VOID)
66: {
67:
68: /* Add ExitProc to the exit list to handle the exit processing. If
69: * there is an error, then terminate the process since there have
70: * not been any resources allocated yet
71: */
72: if(DosExitList(EXLST_ADD, (PFNEXITLIST)ExitProc)) {
73: MessageBox(HWND_DESKTOP,
74: IDMSG_CANNOTLOADEXITLIST,
75: MB_OK | MB_ERROR,
76: TRUE);
77: DosExit(EXIT_PROCESS, RETURN_ERROR);
78: }
79:
80: /* initialize the print dialog structures */
81: InitPrintingDialogs();
82:
83: /* load application name from resource file */
84: if(!WinLoadString(hab, NULL, IDS_APPNAME, MAXNAMEL, szAppName))
85: return FALSE;
86:
87: /* load "untitled" string */
88: if(!WinLoadString(hab, NULL, IDS_UNTITLED, MESSAGELEN, szUntitled))
89: return FALSE;
90:
91: /* register the main client window class */
92: if(!WinRegisterClass(hab,
93: (PSZ)szAppName,
94: (PFNWP)MainWndProc,
95: CS_SIZEREDRAW | CS_CLIPCHILDREN,
96: 0)) {
97: return FALSE;
98: }
99:
100: /*--------------------------------------------------*\
101: * Add any command line processing here
102: \*--------------------------------------------------*/
103:
104:
105: return TRUE;
106:
107: } /* Init() */
108:
109: /****************************************************************\
110: * Initialization routine
111: *--------------------------------------------------------------
112: *
113: * Name: InitMainWindow(hwnd, mp1, mp2)
114: *
115: * Purpose: Performs initialization functions required
116: * when the main window is created.
117: *
118: * Usage: Called once during the WM_CREATE processing when
119: * the main window is created.
120: *
121: * Method:
122: *
123: * Returns: value to be returned from the WM_CREATE message:
124: * TRUE - window creation should stop
125: * FALSE - window creation should continue
126: \****************************************************************/
127: MRESULT InitMainWindow(hwnd, mp1, mp2)
128: HWND hwnd; /* handle to the main client window */
129: MPARAM mp1; /* first parameter of WM_CREATE message */
130: MPARAM mp2; /* second parameter of WM_CREATE message */
131: {
132: RECTL rcl;
133:
134:
135: UpdateTitleText(((PCREATESTRUCT)PVOIDFROMMP(mp2))->hwndParent);
136:
137: WinQueryWindowRect(hwnd, (PRECTL)&rcl);
138:
139: /* create MLE window the same size as the client */
140: hwndMLE = WinCreateWindow(hwnd,
141: WC_MLE,
142: (PSZ)NULL,
143: MLS_HSCROLL | MLS_VSCROLL | WS_VISIBLE,
144: (SHORT)rcl.xLeft,
145: (SHORT)rcl.yBottom,
146: (SHORT)rcl.xRight,
147: (SHORT)rcl.yTop,
148: hwnd,
149: HWND_TOP,
150: ID_MLE,
151: NULL,
152: NULL);
153:
154: if(!hwndMLE)
155: return (MRESULT)TRUE;
156:
157: /* return FALSE to continue window creation, TRUE to abort it */
158: return (MRESULT)FALSE;
159:
160: /* This routine currently doesn't use the mp1 and mp2 parameters so *\
161: * it is referenced here to prevent an 'Unreferenced Parameter'
162: \* warning at compile time */
163:
164: mp1;
165: mp2;
166:
167:
168: } /* InitMainWindow() */
169:
170:
171: /****************************************************************\
172: * Exit list processing procedure
173: *--------------------------------------------------------------
174: *
175: * Name: ExitProc(usTermCode)
176: *
177: * Purpose: Cleans up certain resources when the application
178: * terminates
179: *
180: * Usage: Routine is called by DosExitList when the
181: * application exits
182: *
183: * Method: global resources, such as the main window and
184: * message queue, are destroyed and any system
185: * resources used are freed
186: *
187: * Returns: Returns EXLST_EXIT to the DosExitList handler
188: *
189: \****************************************************************/
190: VOID PASCAL FAR ExitProc(usTermCode)
191: USHORT usTermCode; /* code for the reason for termination */
192: {
193:
194: /* destroy the main window if it exists */
195: if(WinIsWindow(hab, hwndMainFrame))
196: WinDestroyWindow(hwndMainFrame);
197:
198: /*--------------------------------------------------*\
199: * Any other system resources used
200: * (e.g. memory or files) should be freed here
201: \*--------------------------------------------------*/
202:
203: WinDestroyMsgQueue(hmq);
204:
205: WinTerminate(hab);
206:
207: DosExitList(EXLST_EXIT, 0L); /* termination complete */
208:
209: /* This routine currently doesn't use the usTermCode parameter so *\
210: * it is referenced here to prevent an 'Unreferenced Parameter'
211: \* warning at compile time */
212:
213: usTermCode;
214:
215: } /* ExitProc() */
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