source: cprs/branches/tmg-cprs/BDK32/Source/frmVistAAbout.pas@ 1240

Last change on this file since 1240 was 453, checked in by Kevin Toppenberg, 16 years ago

Initial upload of TMG-CPRS 1.0.26.69

File size: 9.5 KB
Line 
1{ **************************************************************
2 Package: XWB - Kernel RPCBroker
3 Date Created: Sept 18, 1997 (Version 1.1)
4 Site Name: Oakland, OI Field Office, Dept of Veteran Affairs
5 Developers: Wally Fort, Joel Ivey
6 Description: Generic About form, simply call ShowAboutBox.
7 Includes display of date, CRC32, and info from
8 Program Info.
9 Current Release: Version 1.1 Patch 40 (January 7, 2005))
10*************************************************************** }
11
12unit frmVistAAbout;
13
14interface
15
16uses Windows, SysUtils, Classes, Graphics, Forms, Controls, StdCtrls,
17 Buttons, ExtCtrls, jpeg, jconsts, Dialogs;
18
19TYPE
20 TInteger8 = Int64;
21
22type
23 TfrmVistAAbout = class(TForm)
24 Panel1: TPanel;
25 VistaLogo: TImage;
26 lblProductName: TLabel;
27 lblVersion: TLabel;
28 lblGovStatement: TLabel;
29 OKButton: TButton;
30 lblCRC: TLabel;
31 Memo1: TMemo;
32 lblDate: TLabel;
33 ProgramIcon: TImage;
34 procedure FormCreate(Sender: TObject);
35 private
36 { Private declarations }
37 public
38 { Public declarations }
39 procedure getfileinfo(var Version: String; var ProductName: String); virtual;
40 end;
41
42procedure ShowAboutBox;
43
44implementation
45
46{$R *.DFM}
47
48 CONST
49 table: ARRAY[0..255] OF DWORD =
50 ($00000000, $77073096, $EE0E612C, $990951BA,
51 $076DC419, $706AF48F, $E963A535, $9E6495A3,
52 $0EDB8832, $79DCB8A4, $E0D5E91E, $97D2D988,
53 $09B64C2B, $7EB17CBD, $E7B82D07, $90BF1D91,
54 $1DB71064, $6AB020F2, $F3B97148, $84BE41DE,
55 $1ADAD47D, $6DDDE4EB, $F4D4B551, $83D385C7,
56 $136C9856, $646BA8C0, $FD62F97A, $8A65C9EC,
57 $14015C4F, $63066CD9, $FA0F3D63, $8D080DF5,
58 $3B6E20C8, $4C69105E, $D56041E4, $A2677172,
59 $3C03E4D1, $4B04D447, $D20D85FD, $A50AB56B,
60 $35B5A8FA, $42B2986C, $DBBBC9D6, $ACBCF940,
61 $32D86CE3, $45DF5C75, $DCD60DCF, $ABD13D59,
62 $26D930AC, $51DE003A, $C8D75180, $BFD06116,
63 $21B4F4B5, $56B3C423, $CFBA9599, $B8BDA50F,
64 $2802B89E, $5F058808, $C60CD9B2, $B10BE924,
65 $2F6F7C87, $58684C11, $C1611DAB, $B6662D3D,
66
67 $76DC4190, $01DB7106, $98D220BC, $EFD5102A,
68 $71B18589, $06B6B51F, $9FBFE4A5, $E8B8D433,
69 $7807C9A2, $0F00F934, $9609A88E, $E10E9818,
70 $7F6A0DBB, $086D3D2D, $91646C97, $E6635C01,
71 $6B6B51F4, $1C6C6162, $856530D8, $F262004E,
72 $6C0695ED, $1B01A57B, $8208F4C1, $F50FC457,
73 $65B0D9C6, $12B7E950, $8BBEB8EA, $FCB9887C,
74 $62DD1DDF, $15DA2D49, $8CD37CF3, $FBD44C65,
75 $4DB26158, $3AB551CE, $A3BC0074, $D4BB30E2,
76 $4ADFA541, $3DD895D7, $A4D1C46D, $D3D6F4FB,
77 $4369E96A, $346ED9FC, $AD678846, $DA60B8D0,
78 $44042D73, $33031DE5, $AA0A4C5F, $DD0D7CC9,
79 $5005713C, $270241AA, $BE0B1010, $C90C2086,
80 $5768B525, $206F85B3, $B966D409, $CE61E49F,
81 $5EDEF90E, $29D9C998, $B0D09822, $C7D7A8B4,
82 $59B33D17, $2EB40D81, $B7BD5C3B, $C0BA6CAD,
83
84 $EDB88320, $9ABFB3B6, $03B6E20C, $74B1D29A,
85 $EAD54739, $9DD277AF, $04DB2615, $73DC1683,
86 $E3630B12, $94643B84, $0D6D6A3E, $7A6A5AA8,
87 $E40ECF0B, $9309FF9D, $0A00AE27, $7D079EB1,
88 $F00F9344, $8708A3D2, $1E01F268, $6906C2FE,
89 $F762575D, $806567CB, $196C3671, $6E6B06E7,
90 $FED41B76, $89D32BE0, $10DA7A5A, $67DD4ACC,
91 $F9B9DF6F, $8EBEEFF9, $17B7BE43, $60B08ED5,
92 $D6D6A3E8, $A1D1937E, $38D8C2C4, $4FDFF252,
93 $D1BB67F1, $A6BC5767, $3FB506DD, $48B2364B,
94 $D80D2BDA, $AF0A1B4C, $36034AF6, $41047A60,
95 $DF60EFC3, $A867DF55, $316E8EEF, $4669BE79,
96 $CB61B38C, $BC66831A, $256FD2A0, $5268E236,
97 $CC0C7795, $BB0B4703, $220216B9, $5505262F,
98 $C5BA3BBE, $B2BD0B28, $2BB45A92, $5CB36A04,
99 $C2D7FFA7, $B5D0CF31, $2CD99E8B, $5BDEAE1D,
100
101 $9B64C2B0, $EC63F226, $756AA39C, $026D930A,
102 $9C0906A9, $EB0E363F, $72076785, $05005713,
103 $95BF4A82, $E2B87A14, $7BB12BAE, $0CB61B38,
104 $92D28E9B, $E5D5BE0D, $7CDCEFB7, $0BDBDF21,
105 $86D3D2D4, $F1D4E242, $68DDB3F8, $1FDA836E,
106 $81BE16CD, $F6B9265B, $6FB077E1, $18B74777,
107 $88085AE6, $FF0F6A70, $66063BCA, $11010B5C,
108 $8F659EFF, $F862AE69, $616BFFD3, $166CCF45,
109 $A00AE278, $D70DD2EE, $4E048354, $3903B3C2,
110 $A7672661, $D06016F7, $4969474D, $3E6E77DB,
111 $AED16A4A, $D9D65ADC, $40DF0B66, $37D83BF0,
112 $A9BCAE53, $DEBB9EC5, $47B2CF7F, $30B5FFE9,
113 $BDBDF21C, $CABAC28A, $53B39330, $24B4A3A6,
114 $BAD03605, $CDD70693, $54DE5729, $23D967BF,
115 $B3667A2E, $C4614AB8, $5D681B02, $2A6F2B94,
116 $B40BBE37, $C30C8EA1, $5A05DF1B, $2D02EF8D);
117
118 // Use CalcCRC32 as a procedure so CRCValue can be passed in but
119 // also returned. This allows multiple calls to CalcCRC32 for
120 // the "same" CRC-32 calculation.
121 PROCEDURE CalcCRC32 (p: pointer; ByteCount: DWORD; VAR CRCValue: DWORD);
122 // The following is a little cryptic (but executes very quickly).
123 // The algorithm is as follows:
124 // 1. exclusive-or the input byte with the low-order byte of
125 // the CRC register to get an INDEX
126 // 2. shift the CRC register eight bits to the right
127 // 3. exclusive-or the CRC register with the contents of
128 // Table[INDEX]
129 // 4. repeat steps 1 through 3 for all bytes
130
131 VAR
132 i: DWORD;
133 q: ^BYTE;
134 BEGIN
135 q := p;
136 FOR i := 0 TO ByteCount-1 DO BEGIN
137 CRCvalue := (CRCvalue SHR 8) XOR
138 Table[ q^ XOR (CRCvalue AND $000000FF) ];
139 INC(q)
140 END
141 END {CalcCRC32};
142
143
144 // The CRC-32 value calculated here matches the one from the PKZIP program.
145 // Use MemoryStream to read file in binary mode.
146 PROCEDURE CalcFileCRC32 (FromName: STRING; VAR CRCvalue: DWORD;
147 VAR TotalBytes: TInteger8;
148 VAR error: WORD);
149 VAR
150 Stream: TMemoryStream;
151 BEGIN
152 error := 0;
153 CRCValue := $FFFFFFFF;
154 Stream := TMemoryStream.Create;
155 TRY
156 TRY
157 Stream.LoadFromFile(FromName);
158 IF Stream.Size > 0
159 THEN CalcCRC32 (Stream.Memory, Stream.Size, CRCvalue)
160 EXCEPT
161 ON E: EReadError DO
162 error := 1
163 END;
164
165 CRCvalue := NOT CRCvalue;
166 TotalBytes := Stream.Size
167 FINALLY
168 Stream.Free
169 END;
170 END {CalcFileCRC32};
171
172procedure TfrmVistAAbout.FormCreate(Sender: TObject);
173var
174 CRC32: DWord;
175 TotalBytes: Int64;
176 Error: Word;
177 Text: String;
178 Version: String;
179 ProductName: String;
180begin
181 CalcFileCRC32(Application.ExeName, CRC32, TotalBytes, Error);
182 lblCRC.Caption := 'CRC: ' + IntToHex(CRC32,8);
183 Text := Application.ExeName;
184 while pos('\',Text) > 0 do
185 begin
186 Text := copy(Text,pos('\',Text)+1,Length(Text));
187 end; // while
188 Text := copy(Text,1,Length(Text)-4);
189 Caption := 'About ' + Text;
190 getfileinfo(Version, ProductName);
191 lblProductName.Caption := ProductName;
192 lblVersion.Caption := 'Version: ' + Version;
193 lblProductName.Width := Panel1.Width-10;
194 lblGovStatement.Width := Panel1.Width-10;
195 if ProgramIcon.Picture.Graphic = nil then
196 begin
197 VistALogo.Left := (Panel1.Width - VistALogo.Width) div 2;
198 end;
199end;
200
201procedure TfrmVistAAbout.GetFileInfo(var Version: String; var ProductName: String);
202var
203 VerInfoSize: DWORD; // holds the size of the version info resource
204 GetInfoSizeJunk: DWORD; // a junk variable, its value is ignored
205 VersionInfo: Pointer; // points to the version info resource
206 Translation: Pointer; // holds version info translation table
207 InfoPointer: Pointer; // a pointer to version information
208
209 VersionInfoSize: UINT; // holds the size of version information
210 VersionValue: string; // holds the version info request string
211 SearchRec: TSearchRec;
212 DateTimeVal: TDateTime;
213 WriteTime: Integer;
214begin
215 {retrieve the size of the version information resource, if one exists}
216 VerInfoSize := GetFileVersionInfoSize(PChar(Application.ExeName),
217 GetInfoSizeJunk);
218
219 {if there was a version information resource available...}
220
221 if VerInfoSize>0 then
222 begin
223 {retrieve enough memory to hold the version resource}
224 GetMem(VersionInfo, VerInfoSize);
225
226 {retrieve the version resource for the selected file}
227 GetFileVersionInfo(PChar(Application.ExeName), 0,
228 VerInfoSize, VersionInfo);
229
230 {retrieve a pointer to the translation table}
231 VerQueryValue(VersionInfo, '\\VarFileInfo\\Translation',
232 Translation, VersionInfoSize);
233
234 {initialize the version value request string}
235 VersionValue :='\\StringFileInfo\\'+
236 IntToHex(LoWord(LongInt(Translation^)),4)+
237 IntToHex(HiWord(LongInt(Translation^)),4)+
238 '\\';
239
240 {retrieve and display the file version}
241 VerQueryValue(VersionInfo, PChar(VersionValue+'FileVersion'), InfoPointer,
242 VersionInfoSize);
243 Version := string(PChar(InfoPointer));
244
245 {retrieve and display the product name}
246 VerQueryValue(VersionInfo, PChar(VersionValue+'ProductName'), InfoPointer,
247 VersionInfoSize);
248 ProductName := string(PChar(InfoPointer));
249
250 {free the version resource memory}
251 FreeMem(VersionInfo, VerInfoSize);
252 end
253 else
254 begin
255 Version := 'Not in File';
256 ProductName := 'Not Identified In File';
257 end;
258 if findfirst(Application.ExeName, faAnyFile, SearchRec) = 0 then
259 begin
260 WriteTime := SearchRec.Time;
261 DateTimeVal := FileDateToDateTime(WriteTime);
262 lblDate.Caption := FormatDateTime('mmmm dd, yyyy hh:nn',DateTimeVal);
263 end;
264end;
265
266procedure ShowAboutBox;
267begin
268 with TfrmVistAAbout.Create(Application) do
269 try
270 ShowModal;
271 finally
272 free;
273 end;
274end;
275
276end.
277
278
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