| inherited;
end;
function TDll.GetLoaded: Boolean;
begin
result := FModule <> 0;
end;
function TDll.GetProcAddress(const Order: Longint): FARPROC;
begin
if Loaded then
result := Windows.GetProcAddress(FModule, Pointer(Order))
else
raise EDllError.CreateFmt(''''Do Load before GetProcAddress of "%u"'''', [DWORD(Order)]);
end;
function TDll.GetProcAddress(const ProcName: String): FARPROC;
begin
if Loaded then
result := Windows.GetProcAddress(FModule, PChar(ProcName))
else
raise EDllError.CreateFmt(''''Do Load before GetProcAddress of "%s"'''', [ProcName]);
end;
procedure TDll.SetLoaded(const Value: Boolean);
begin
if Loaded <> Value then
begin
if not Value then
begin
Assert(FModule <> 0);
DoBeforeDllUnLoaded;
try
FreeLibrary(FModule);
FModule := 0;
except
Application.HandleException(Self);
end;
DoDllUnLoaded;
end
else
begin
FModule := LoadLibrary(PChar(FFileName));
try
Win32Check(FModule <> 0);
DoDllLoaded;
except
On E: Exception do
begin
if FModule <> 0 then
begin
FreeLibrary(FModule);
FModule := 0;
end;
raise EDllError.CreateFmt(''''LoadLibrary Error: %s'''', [E.Message]);
end;
end;
end;
end;
end;
procedure TDll.SetFileName(const Value: String);
begin
if Loaded then
raise EDllError.CreateFmt(''''Do Unload before load another Module named: "%s"'''',
[Value]);
if FFileName <> Value then
begin
FFileName := Value;
DoFileNameChange;
end;
end;
procedure TDll.DoFileNameChange;
begin
// do nonthing.
end;
procedure TDll.DoDllLoaded;
begin
if Assigned(FOwner) and Assigned(FOwner.OnDllLoaded) then
FOwner.OnDllLoaded(FOwner, Self);
end;
procedure TDll.DoDllUnLoaded;
begin
//do nonthing.
end;
procedure TDll.DoPermitChange;
begin
//do nonthing.
end;
procedure TDll.SetPermit(const Value: Boolean);
begin
if FPermit <> Value then
begin
FPermit := Value;
DoPermitChange;
end;
end;
procedure TDll.DoBeforeDllUnLoaded;
begin
if Assigned(FOwner) and Assigned(FOwner.OnDllBeforeUnLoaded) then
FOwner.OnDllBeforeUnLoaded(FOwner, Self);
end;
{ TDllManager }
function TDllManager.Add(const FileName: String): Integer;
var
Dll: TDll;
begin
result := -1;
Lock;
try
if DllsByName[FileName] = nil then
begin
Dll := FDllClass.Create;
Dll.FileName := FileName;
result := Add(Dll);
end
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