System.Classes.TComponent.BeginInvoke
Delphi
function BeginInvoke(const AProc: TProc; const AContext: TObject = nil): IAsyncResult; overload;
function BeginInvoke(const AProc: TASyncProcedureEvent; const AContext: TObject = nil): IAsyncResult; overload;
function BeginInvoke<TResult>(const AFunc: TFunc<TResult>; const AContext: TObject = nil): IAsyncResult; overload;
function BeginInvoke(const AProc: TAsyncConstArrayProc; const Params: array of const; const AContext: TObject = nil): IAsyncResult; overload;
function BeginInvoke<TResult>(const AFunc: TAsyncConstArrayFunc<TResult>; const Params: array of const; const AContext: TObject = nil): IAsyncResult; overload;
function BeginInvoke(const AProc: TAsyncConstArrayProcedureEvent; const Params: array of const; const AContext: TObject = nil): IAsyncResult; overload;
function BeginInvoke(const AFunc: TAsyncConstArrayFunctionEvent; const Params: array of const; const AContext: TObject = nil): IAsyncResult; overload;
function BeginInvoke(const AFunc: TAsyncFunctionEvent; const AContext: TObject = nil): IAsyncResult; overload;
C++
System::Types::_di_IAsyncResult __fastcall BeginInvoke(const System::Sysutils::_di_TProc AProc, System::TObject* const AContext = (System::TObject*)(0x0))/* overload */;
System::Types::_di_IAsyncResult __fastcall BeginInvoke(const TAsyncProcedureEvent AProc, System::TObject* const AContext = (System::TObject*)(0x0))/* overload */;
template<typename TResult> System::Types::_di_IAsyncResult __fastcall BeginInvoke(const System::DelphiInterface<System::Sysutils::TFunc__1<TResult> > AFunc, System::TObject* const AContext = (System::TObject*)(0x0))/* overload */;
System::Types::_di_IAsyncResult __fastcall BeginInvoke(const _di_TAsyncConstArrayProc AProc, const System::TVarRec *Params, const int Params_High, System::TObject* const AContext = (System::TObject*)(0x0))/* overload */;
template<typename TResult> System::Types::_di_IAsyncResult __fastcall BeginInvoke(const System::DelphiInterface<TAsyncConstArrayFunc__1<TResult> > AFunc, const System::TVarRec *Params, const int Params_High, System::TObject* const AContext = (System::TObject*)(0x0))/* overload */;
System::Types::_di_IAsyncResult __fastcall BeginInvoke(const TAsyncConstArrayProcedureEvent AProc, const System::TVarRec *Params, const int Params_High, System::TObject* const AContext = (System::TObject*)(0x0))/* overload */;
System::Types::_di_IAsyncResult __fastcall BeginInvoke(const TAsyncConstArrayFunctionEvent AFunc, const System::TVarRec *Params, const int Params_High, System::TObject* const AContext = (System::TObject*)(0x0))/* overload */;
System::Types::_di_IAsyncResult __fastcall BeginInvoke(const TAsyncFunctionEvent AFunc, System::TObject* const AContext = (System::TObject*)(0x0))/* overload */;
Propriétés
| Type | Visibilité | Source | Unité | Parent |
|---|---|---|---|---|
| function | public | System.Classes.pas System.Classes.hpp |
System.Classes | TComponent |
Description
Effectue un appel asynchrone à la méthode spécifiée par AProc ou AFunc.
Le paramètre AContext spécifie le contexte dans lequel la méthode s'exécute. Ce contexte correspond au thread principal. Dans le cas d'un descendant Tcontrol, elle s'exécute dans le contexte du thread sur lequel le handle de fenêtre le plus proche a été créé.
BeginInvoke renvoie les résultats de l'exécution asynchrone dans une interface IAsyncResult utilisée comme type de renvoi.