119 lines
2.7 KiB
ObjectPascal
119 lines
2.7 KiB
ObjectPascal
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{
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NSIS ExDLL example
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(C) 2001 - Peter Windridge
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Fixed and formatted by Brett Dever
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http://editor.nfscheats.com/
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Tested in Delphi 7.0
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}
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library exdll;
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uses Windows;
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type
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VarConstants = (
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INST_0,
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INST_1, // $1
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INST_2, // $2
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INST_3, // $3
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INST_4, // $4
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INST_5, // $5
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INST_6, // $6
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INST_7, // $7
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INST_8, // $8
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INST_9, // $9
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INST_R0, // $R0
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INST_R1, // $R1
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INST_R2, // $R2
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INST_R3, // $R3
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INST_R4, // $R4
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INST_R5, // $R5
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INST_R6, // $R6
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INST_R7, // $R7
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INST_R8, // $R8
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INST_R9, // $R9
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INST_CMDLINE, // $CMDLINE
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INST_INSTDIR, // $INSTDIR
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INST_OUTDIR, // $OUTDIR
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INST_EXEDIR, // $EXEDIR
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INST_LANG, // $LANGUAGE
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__INST_LAST
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);
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TVariableList = INST_0..__INST_LAST;
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pstack_t = ^stack_t;
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stack_t = record
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next: pstack_t;
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text: PChar;
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end;
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var
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g_stringsize: integer;
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g_stacktop: ^pstack_t;
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g_variables: PChar;
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g_hwndParent: HWND;
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function PopString(): string;
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var
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th: pstack_t;
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begin
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if integer(g_stacktop^) <> 0 then begin
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th := g_stacktop^;
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Result := PChar(@th.text);
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g_stacktop^ := th.next;
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GlobalFree(HGLOBAL(th));
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end;
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end;
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procedure PushString(const str: string='');
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var
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th: pstack_t;
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begin
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if integer(g_stacktop) <> 0 then begin
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th := pstack_t(GlobalAlloc(GPTR, SizeOf(stack_t) + g_stringsize));
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lstrcpyn(@th.text, PChar(str), g_stringsize);
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th.next := g_stacktop^;
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g_stacktop^ := th;
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end;
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end;
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function GetUserVariable(const varnum: TVariableList): string;
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begin
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if (integer(varnum) >= 0) and (integer(varnum) < integer(__INST_LAST)) then
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Result := g_variables + integer(varnum) * g_stringsize
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else
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Result := '';
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end;
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procedure SetUserVariable(const varnum: TVariableList; const value: string);
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begin
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if (value <> '') and (integer(varnum) >= 0) and (integer(varnum) < integer(__INST_LAST)) then
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lstrcpy(g_variables + integer(varnum) * g_stringsize, PChar(value))
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end;
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procedure NSISDialog(const text, caption: string; const buttons: integer);
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begin
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MessageBox(g_hwndParent, PChar(text), PChar(caption), buttons);
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end;
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procedure ex_dll(const hwndParent: HWND; const string_size: integer; const variables: PChar; const stacktop: pointer); cdecl;
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begin
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// setup global variables
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g_stringsize := string_size;
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g_hwndParent := hwndParent;
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g_stacktop := stacktop;
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g_variables := variables;
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// end global variable setup
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NSISDialog(GetUserVariable(INST_0), 'The value of $0', MB_OK);
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NSISDialog(PopString, 'pop', MB_OK);
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PushString('Hello, this is a push');
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SetUserVariable(INST_0, 'This is user var $0');
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end;
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exports ex_dll;
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begin
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end.
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