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{
This file is part of the Free Pascal run time library.
Copyright (c) 1999-2000 by the Free Pascal development team
Implements OS dependent part for loading of dynamic libraries.
See the file COPYING.FPC, included in this distribution,
for details about the copyright.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
**********************************************************************}
{$ifdef readinterface}
{ ---------------------------------------------------------------------
Interface declarations
---------------------------------------------------------------------}
Type
TLibHandle = Longint;
Const
NilHandle = 0;
// these are for easier crossplatform construction of dll names in dynloading libs.
SharedSuffix = 'dll';
{$else}
{ ---------------------------------------------------------------------
Implementation section
---------------------------------------------------------------------}
Uses windows;
Function LoadLibrary(const Name : AnsiString) : TlibHandle;
var
ws: PWideChar;
begin
ws:=StringToPWideChar(Name);
Result:=Windows.LoadLibrary(ws);
FreeMem(ws);
end;
Function GetProcedureAddress(Lib : TLibHandle; const ProcName : AnsiString) : Pointer;
var
ws: PWideChar;
begin
ws:=StringToPWideChar(ProcName);
Result:=Windows.GetProcAddress(Lib, ws);
FreeMem(ws);
end;
Function UnloadLibrary(Lib : TLibHandle) : Boolean;
begin
Result:=Windows.FreeLibrary(Lib);
end;
Function GetLoadErrorStr: string;
Var
rc,c : integer;
w : widestring;
begin
rc := GetLastError;
SetLength(w,255);
C:=FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM,nil,rc,
MakeLangId(LANG_NEUTRAL, SUBLANG_DEFAULT),
@W[1], 255,nil);
SetLength(w,c);
Result:=w;
end;
{$endif}
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