278 lines
9.5 KiB
Plaintext
278 lines
9.5 KiB
Plaintext
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{ **************************************************************
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Package: XWB - Kernel RPCBroker
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Date Created: Sept 18, 1997 (Version 1.1)
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Site Name: Oakland, OI Field Office, Dept of Veteran Affairs
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Developers: Wally Fort, Joel Ivey
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Description: Generic About form, simply call ShowAboutBox.
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Includes display of date, CRC32, and info from
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Program Info.
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Current Release: Version 1.1 Patch 40 (January 7, 2005))
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*************************************************************** }
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unit frmVistAAbout;
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interface
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uses Windows, SysUtils, Classes, Graphics, Forms, Controls, StdCtrls,
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Buttons, ExtCtrls, jpeg, jconsts, Dialogs;
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TYPE
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TInteger8 = Int64;
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type
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TfrmVistAAbout = class(TForm)
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Panel1: TPanel;
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VistaLogo: TImage;
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lblProductName: TLabel;
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lblVersion: TLabel;
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lblGovStatement: TLabel;
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OKButton: TButton;
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lblCRC: TLabel;
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Memo1: TMemo;
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lblDate: TLabel;
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ProgramIcon: TImage;
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procedure FormCreate(Sender: TObject);
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private
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{ Private declarations }
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public
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{ Public declarations }
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procedure getfileinfo(var Version: String; var ProductName: String); virtual;
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end;
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procedure ShowAboutBox;
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implementation
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{$R *.DFM}
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CONST
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table: ARRAY[0..255] OF DWORD =
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($00000000, $77073096, $EE0E612C, $990951BA,
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$076DC419, $706AF48F, $E963A535, $9E6495A3,
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$0EDB8832, $79DCB8A4, $E0D5E91E, $97D2D988,
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$09B64C2B, $7EB17CBD, $E7B82D07, $90BF1D91,
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$1DB71064, $6AB020F2, $F3B97148, $84BE41DE,
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$1ADAD47D, $6DDDE4EB, $F4D4B551, $83D385C7,
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$136C9856, $646BA8C0, $FD62F97A, $8A65C9EC,
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$14015C4F, $63066CD9, $FA0F3D63, $8D080DF5,
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$3B6E20C8, $4C69105E, $D56041E4, $A2677172,
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$3C03E4D1, $4B04D447, $D20D85FD, $A50AB56B,
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$35B5A8FA, $42B2986C, $DBBBC9D6, $ACBCF940,
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$32D86CE3, $45DF5C75, $DCD60DCF, $ABD13D59,
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$26D930AC, $51DE003A, $C8D75180, $BFD06116,
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$21B4F4B5, $56B3C423, $CFBA9599, $B8BDA50F,
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$2802B89E, $5F058808, $C60CD9B2, $B10BE924,
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$2F6F7C87, $58684C11, $C1611DAB, $B6662D3D,
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$76DC4190, $01DB7106, $98D220BC, $EFD5102A,
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$71B18589, $06B6B51F, $9FBFE4A5, $E8B8D433,
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$7807C9A2, $0F00F934, $9609A88E, $E10E9818,
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$7F6A0DBB, $086D3D2D, $91646C97, $E6635C01,
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$6B6B51F4, $1C6C6162, $856530D8, $F262004E,
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$6C0695ED, $1B01A57B, $8208F4C1, $F50FC457,
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$65B0D9C6, $12B7E950, $8BBEB8EA, $FCB9887C,
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$62DD1DDF, $15DA2D49, $8CD37CF3, $FBD44C65,
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$4DB26158, $3AB551CE, $A3BC0074, $D4BB30E2,
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$4ADFA541, $3DD895D7, $A4D1C46D, $D3D6F4FB,
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$4369E96A, $346ED9FC, $AD678846, $DA60B8D0,
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$44042D73, $33031DE5, $AA0A4C5F, $DD0D7CC9,
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$5005713C, $270241AA, $BE0B1010, $C90C2086,
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$5768B525, $206F85B3, $B966D409, $CE61E49F,
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$5EDEF90E, $29D9C998, $B0D09822, $C7D7A8B4,
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$59B33D17, $2EB40D81, $B7BD5C3B, $C0BA6CAD,
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$EDB88320, $9ABFB3B6, $03B6E20C, $74B1D29A,
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$EAD54739, $9DD277AF, $04DB2615, $73DC1683,
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$E3630B12, $94643B84, $0D6D6A3E, $7A6A5AA8,
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$E40ECF0B, $9309FF9D, $0A00AE27, $7D079EB1,
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$F00F9344, $8708A3D2, $1E01F268, $6906C2FE,
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$F762575D, $806567CB, $196C3671, $6E6B06E7,
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$FED41B76, $89D32BE0, $10DA7A5A, $67DD4ACC,
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$F9B9DF6F, $8EBEEFF9, $17B7BE43, $60B08ED5,
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$D6D6A3E8, $A1D1937E, $38D8C2C4, $4FDFF252,
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$D1BB67F1, $A6BC5767, $3FB506DD, $48B2364B,
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$D80D2BDA, $AF0A1B4C, $36034AF6, $41047A60,
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$DF60EFC3, $A867DF55, $316E8EEF, $4669BE79,
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$CB61B38C, $BC66831A, $256FD2A0, $5268E236,
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$CC0C7795, $BB0B4703, $220216B9, $5505262F,
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$C5BA3BBE, $B2BD0B28, $2BB45A92, $5CB36A04,
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$C2D7FFA7, $B5D0CF31, $2CD99E8B, $5BDEAE1D,
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$9B64C2B0, $EC63F226, $756AA39C, $026D930A,
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$9C0906A9, $EB0E363F, $72076785, $05005713,
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$95BF4A82, $E2B87A14, $7BB12BAE, $0CB61B38,
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$92D28E9B, $E5D5BE0D, $7CDCEFB7, $0BDBDF21,
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$86D3D2D4, $F1D4E242, $68DDB3F8, $1FDA836E,
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$81BE16CD, $F6B9265B, $6FB077E1, $18B74777,
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$88085AE6, $FF0F6A70, $66063BCA, $11010B5C,
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$8F659EFF, $F862AE69, $616BFFD3, $166CCF45,
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$A00AE278, $D70DD2EE, $4E048354, $3903B3C2,
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$A7672661, $D06016F7, $4969474D, $3E6E77DB,
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$AED16A4A, $D9D65ADC, $40DF0B66, $37D83BF0,
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$A9BCAE53, $DEBB9EC5, $47B2CF7F, $30B5FFE9,
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$BDBDF21C, $CABAC28A, $53B39330, $24B4A3A6,
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$BAD03605, $CDD70693, $54DE5729, $23D967BF,
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$B3667A2E, $C4614AB8, $5D681B02, $2A6F2B94,
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$B40BBE37, $C30C8EA1, $5A05DF1B, $2D02EF8D);
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// Use CalcCRC32 as a procedure so CRCValue can be passed in but
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// also returned. This allows multiple calls to CalcCRC32 for
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// the "same" CRC-32 calculation.
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PROCEDURE CalcCRC32 (p: pointer; ByteCount: DWORD; VAR CRCValue: DWORD);
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// The following is a little cryptic (but executes very quickly).
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// The algorithm is as follows:
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// 1. exclusive-or the input byte with the low-order byte of
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// the CRC register to get an INDEX
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// 2. shift the CRC register eight bits to the right
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// 3. exclusive-or the CRC register with the contents of
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// Table[INDEX]
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// 4. repeat steps 1 through 3 for all bytes
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VAR
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i: DWORD;
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q: ^BYTE;
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BEGIN
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q := p;
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FOR i := 0 TO ByteCount-1 DO BEGIN
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CRCvalue := (CRCvalue SHR 8) XOR
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Table[ q^ XOR (CRCvalue AND $000000FF) ];
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INC(q)
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END
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END {CalcCRC32};
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// The CRC-32 value calculated here matches the one from the PKZIP program.
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// Use MemoryStream to read file in binary mode.
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PROCEDURE CalcFileCRC32 (FromName: STRING; VAR CRCvalue: DWORD;
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VAR TotalBytes: TInteger8;
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VAR error: WORD);
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VAR
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Stream: TMemoryStream;
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BEGIN
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error := 0;
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CRCValue := $FFFFFFFF;
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Stream := TMemoryStream.Create;
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TRY
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TRY
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Stream.LoadFromFile(FromName);
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IF Stream.Size > 0
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THEN CalcCRC32 (Stream.Memory, Stream.Size, CRCvalue)
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EXCEPT
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ON E: EReadError DO
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error := 1
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END;
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CRCvalue := NOT CRCvalue;
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TotalBytes := Stream.Size
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FINALLY
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Stream.Free
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END;
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END {CalcFileCRC32};
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procedure TfrmVistAAbout.FormCreate(Sender: TObject);
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var
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CRC32: DWord;
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TotalBytes: Int64;
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Error: Word;
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Text: String;
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Version: String;
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ProductName: String;
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begin
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CalcFileCRC32(Application.ExeName, CRC32, TotalBytes, Error);
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lblCRC.Caption := 'CRC: ' + IntToHex(CRC32,8);
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Text := Application.ExeName;
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while pos('\',Text) > 0 do
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begin
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Text := copy(Text,pos('\',Text)+1,Length(Text));
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end; // while
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Text := copy(Text,1,Length(Text)-4);
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Caption := 'About ' + Text;
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getfileinfo(Version, ProductName);
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lblProductName.Caption := ProductName;
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lblVersion.Caption := 'Version: ' + Version;
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lblProductName.Width := Panel1.Width-10;
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lblGovStatement.Width := Panel1.Width-10;
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if ProgramIcon.Picture.Graphic = nil then
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begin
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VistALogo.Left := (Panel1.Width - VistALogo.Width) div 2;
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end;
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end;
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procedure TfrmVistAAbout.GetFileInfo(var Version: String; var ProductName: String);
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var
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VerInfoSize: DWORD; // holds the size of the version info resource
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GetInfoSizeJunk: DWORD; // a junk variable, its value is ignored
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VersionInfo: Pointer; // points to the version info resource
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Translation: Pointer; // holds version info translation table
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InfoPointer: Pointer; // a pointer to version information
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VersionInfoSize: UINT; // holds the size of version information
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VersionValue: string; // holds the version info request string
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SearchRec: TSearchRec;
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DateTimeVal: TDateTime;
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WriteTime: Integer;
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begin
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{retrieve the size of the version information resource, if one exists}
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VerInfoSize := GetFileVersionInfoSize(PChar(Application.ExeName),
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GetInfoSizeJunk);
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{if there was a version information resource available...}
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if VerInfoSize>0 then
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begin
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{retrieve enough memory to hold the version resource}
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GetMem(VersionInfo, VerInfoSize);
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{retrieve the version resource for the selected file}
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GetFileVersionInfo(PChar(Application.ExeName), 0,
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VerInfoSize, VersionInfo);
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{retrieve a pointer to the translation table}
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VerQueryValue(VersionInfo, '\\VarFileInfo\\Translation',
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Translation, VersionInfoSize);
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{initialize the version value request string}
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VersionValue :='\\StringFileInfo\\'+
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IntToHex(LoWord(LongInt(Translation^)),4)+
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IntToHex(HiWord(LongInt(Translation^)),4)+
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'\\';
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{retrieve and display the file version}
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VerQueryValue(VersionInfo, PChar(VersionValue+'FileVersion'), InfoPointer,
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VersionInfoSize);
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Version := string(PChar(InfoPointer));
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{retrieve and display the product name}
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VerQueryValue(VersionInfo, PChar(VersionValue+'ProductName'), InfoPointer,
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VersionInfoSize);
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ProductName := string(PChar(InfoPointer));
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{free the version resource memory}
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FreeMem(VersionInfo, VerInfoSize);
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end
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else
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begin
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Version := 'Not in File';
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ProductName := 'Not Identified In File';
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end;
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if findfirst(Application.ExeName, faAnyFile, SearchRec) = 0 then
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begin
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WriteTime := SearchRec.Time;
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DateTimeVal := FileDateToDateTime(WriteTime);
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lblDate.Caption := FormatDateTime('mmmm dd, yyyy hh:nn',DateTimeVal);
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end;
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end;
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procedure ShowAboutBox;
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begin
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with TfrmVistAAbout.Create(Application) do
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try
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ShowModal;
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finally
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free;
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end;
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end;
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end.
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