Une autre idée consiste à rechercher des informations de type qui se trouvent au-dessus de la liste des fonctions exportées, de sorte que vous pouvez ignorer l'énumération. Les informations de type sont exportées avec des noms commençant par le préfixe '@ $ xp $'. Voici un exemple:
unit PackageUtils;
interface
uses
Windows, Classes, SysUtils, Contnrs, TypInfo;
type
TDelphiPackageList = class;
TDelphiPackage = class;
TDelphiProcess = class
private
FPackages: TDelphiPackageList;
function GetPackageCount: Integer;
function GetPackages(Index: Integer): TDelphiPackage;
public
constructor Create; virtual;
destructor Destroy; override;
procedure Clear; virtual;
function FindPackage(Handle: HMODULE): TDelphiPackage;
procedure Reload; virtual;
property PackageCount: Integer read GetPackageCount;
property Packages[Index: Integer]: TDelphiPackage read GetPackages;
end;
TDelphiPackageList = class(TObjectList)
protected
function GetItem(Index: Integer): TDelphiPackage;
procedure SetItem(Index: Integer; APackage: TDelphiPackage);
public
function Add(APackage: TDelphiPackage): Integer;
function Extract(APackage: TDelphiPackage): TDelphiPackage;
function Remove(APackage: TDelphiPackage): Integer;
function IndexOf(APackage: TDelphiPackage): Integer;
procedure Insert(Index: Integer; APackage: TDelphiPackage);
function First: TDelphiPackage;
function Last: TDelphiPackage;
property Items[Index: Integer]: TDelphiPackage read GetItem write SetItem; default;
end;
TDelphiPackage = class
private
FHandle: THandle;
FInfoTable: Pointer;
FTypeInfos: TList;
procedure CheckInfoTable;
procedure CheckTypeInfos;
function GetDescription: string;
function GetFileName: string;
function GetInfoName(NameType: TNameType; Index: Integer): string;
function GetShortName: string;
function GetTypeInfoCount(Kinds: TTypeKinds): Integer;
function GetTypeInfos(Kinds: TTypeKinds; Index: Integer): PTypeInfo;
public
constructor Create(AHandle: HMODULE; AInfoTable: Pointer = nil);
destructor Destroy; override;
property Description: string read GetDescription;
property FileName: string read GetFileName;
property Handle: THandle read FHandle;
property ShortName: string read GetShortName;
property TypeInfoCount[Kinds: TTypeKinds]: Integer read GetTypeInfoCount;
property TypeInfos[Kinds: TTypeKinds; Index: Integer]: PTypeInfo read GetTypeInfos;
end;
implementation
uses
RTLConsts, SysConst,
PSAPI, ImageHlp;
{ Package info structures copied from SysUtils.pas }
type
PPkgName = ^TPkgName;
TPkgName = packed record
HashCode: Byte;
Name: array[0..255] of Char;
end;
PUnitName = ^TUnitName;
TUnitName = packed record
Flags : Byte;
HashCode: Byte;
Name: array[0..255] of Char;
end;
PPackageInfoHeader = ^TPackageInfoHeader;
TPackageInfoHeader = packed record
Flags: Cardinal;
RequiresCount: Integer;
{Requires: array[0..9999] of TPkgName;
ContainsCount: Integer;
Contains: array[0..9999] of TUnitName;}
end;
TEnumModulesCallback = function (Module: HMODULE; Data: Pointer = nil): Boolean;
TEnumModulesProc = function (Callback: TEnumModulesCallback; Data: Pointer = nil): Boolean;
const
STypeInfoPrefix = '@$xp$';
var
EnumModules: TEnumModulesProc = nil;
function PackageInfoTable(Module: HMODULE): PPackageInfoHeader; forward;
function AddPackage(Module: HMODULE; Data: {TDelphiPackageList} Pointer): Boolean;
var
InfoTable: Pointer;
begin
Result := False;
if (Module <> HInstance) then
begin
InfoTable := PackageInfoTable(Module);
if Assigned(InfoTable) then
TDelphiPackageList(Data).Add(TDelphiPackage.Create(Module, InfoTable));
end;
end;
function GetPackageDescription(Module: HMODULE): string;
var
ResInfo: HRSRC;
ResData: HGLOBAL;
begin
Result := '';
ResInfo := FindResource(Module, 'DESCRIPTION', RT_RCDATA);
if ResInfo <> 0 then
begin
ResData := LoadResource(Module, ResInfo);
if ResData <> 0 then
try
Result := PWideChar(LockResource(ResData));
UnlockResource(ResData);
finally
FreeResource(ResData);
end;
end;
end;
function EnumModulesPS(Callback: TEnumModulesCallback; Data: Pointer = nil): Boolean;
var
ProcessHandle: THandle;
SizeNeeded: Cardinal;
P, ModuleHandle: PDWORD;
I: Integer;
begin
Result := False;
ProcessHandle := OpenProcess(PROCESS_QUERY_INFORMATION or PROCESS_VM_READ, False, GetCurrentProcessId);
if ProcessHandle = 0 then
RaiseLastOSError;
try
SizeNeeded := 0;
EnumProcessModules(ProcessHandle, nil, 0, SizeNeeded);
if SizeNeeded = 0 then
Exit;
P := AllocMem(SizeNeeded);
try
if EnumProcessModules(ProcessHandle, P, SizeNeeded, SizeNeeded) then
begin
ModuleHandle := P;
for I := 0 to SizeNeeded div SizeOf(DWORD) - 1 do
begin
if Callback(ModuleHandle^, Data) then
Exit;
Inc(ModuleHandle);
end;
Result := True;
end;
finally
FreeMem(P);
end;
finally
CloseHandle(ProcessHandle);
end;
end;
function EnumModulesTH(Callback: TEnumModulesCallback; Data: Pointer = nil): Boolean;
begin
Result := False;
// todo win9x?
end;
function PackageInfoTable(Module: HMODULE): PPackageInfoHeader;
var
ResInfo: HRSRC;
Data: THandle;
begin
Result := nil;
ResInfo := FindResource(Module, 'PACKAGEINFO', RT_RCDATA);
if ResInfo <> 0 then
begin
Data := LoadResource(Module, ResInfo);
if Data <> 0 then
try
Result := LockResource(Data);
UnlockResource(Data);
finally
FreeResource(Data);
end;
end;
end;
{ TDelphiProcess private }
function TDelphiProcess.GetPackageCount: Integer;
begin
Result := FPackages.Count;
end;
function TDelphiProcess.GetPackages(Index: Integer): TDelphiPackage;
begin
Result := FPackages[Index];
end;
{ TDelphiProcess public }
constructor TDelphiProcess.Create;
begin
inherited Create;
FPackages := TDelphiPackageList.Create;
Reload;
end;
destructor TDelphiProcess.Destroy;
begin
FPackages.Free;
inherited Destroy;
end;
procedure TDelphiProcess.Clear;
begin
FPackages.Clear;
end;
function TDelphiProcess.FindPackage(Handle: HMODULE): TDelphiPackage;
var
I: Integer;
begin
Result := nil;
for I := 0 to FPackages.Count - 1 do
if FPackages[I].Handle = Handle then
begin
Result := FPackages[I];
Break;
end;
end;
procedure TDelphiProcess.Reload;
begin
Clear;
if Assigned(EnumModules) then
EnumModules(AddPackage, FPackages);
end;
{ TDelphiPackageList protected }
function TDelphiPackageList.GetItem(Index: Integer): TDelphiPackage;
begin
Result := TDelphiPackage(inherited GetItem(Index));
end;
procedure TDelphiPackageList.SetItem(Index: Integer; APackage: TDelphiPackage);
begin
inherited SetItem(Index, APackage);
end;
{ TDelphiPackageList public }
function TDelphiPackageList.Add(APackage: TDelphiPackage): Integer;
begin
Result := inherited Add(APackage);
end;
function TDelphiPackageList.Extract(APackage: TDelphiPackage): TDelphiPackage;
begin
Result := TDelphiPackage(inherited Extract(APackage));
end;
function TDelphiPackageList.First: TDelphiPackage;
begin
Result := TDelphiPackage(inherited First);
end;
function TDelphiPackageList.IndexOf(APackage: TDelphiPackage): Integer;
begin
Result := inherited IndexOf(APackage);
end;
procedure TDelphiPackageList.Insert(Index: Integer; APackage: TDelphiPackage);
begin
inherited Insert(Index, APackage);
end;
function TDelphiPackageList.Last: TDelphiPackage;
begin
Result := TDelphiPackage(inherited Last);
end;
function TDelphiPackageList.Remove(APackage: TDelphiPackage): Integer;
begin
Result := inherited Remove(APackage);
end;
{ TDelphiPackage private }
procedure TDelphiPackage.CheckInfoTable;
begin
if not Assigned(FInfoTable) then
FInfoTable := PackageInfoTable(Handle);
if not Assigned(FInfoTable) then
raise EPackageError.CreateFmt(SCannotReadPackageInfo, [ExtractFileName(GetModuleName(Handle))]);
end;
procedure TDelphiPackage.CheckTypeInfos;
var
ExportDir: PImageExportDirectory;
Size: DWORD;
Names: PDWORD;
I: Integer;
begin
if not Assigned(FTypeInfos) then
begin
FTypeInfos := TList.Create;
try
Size := 0;
ExportDir := ImageDirectoryEntryToData(Pointer(Handle), True, IMAGE_DIRECTORY_ENTRY_EXPORT, Size);
if not Assigned(ExportDir) then
Exit;
Names := PDWORD(DWORD(Handle) + DWORD(ExportDir^.AddressOfNames));
for I := 0 to ExportDir^.NumberOfNames - 1 do
begin
if StrLIComp(PChar(DWORD(Handle) + Names^), STypeInfoPrefix, StrLen(STypeInfoPrefix)) <> 0 then
Break;
FTypeInfos.Add(GetProcAddress(Handle, PChar(DWORD(Handle) + Names^)));
Inc(Names);
end;
except
FreeAndNil(FTypeInfos);
raise;
end;
end;
end;
function TDelphiPackage.GetDescription: string;
begin
Result := GetPackageDescription(Handle);
end;
function TDelphiPackage.GetFileName: string;
begin
Result := GetModuleName(FHandle);
end;
function TDelphiPackage.GetInfoName(NameType: TNameType; Index: Integer): string;
var
P: Pointer;
Count: Integer;
I: Integer;
begin
Result := '';
CheckInfoTable;
Count := PPackageInfoHeader(FInfoTable)^.RequiresCount;
P := Pointer(Cardinal(FInfoTable) + SizeOf(TPackageInfoHeader));
case NameType of
ntContainsUnit:
begin
for I := 0 to Count - 1 do
P := Pointer(Cardinal(P) + StrLen(PPkgName(P)^.Name) + 2);
Count := Integer(P^);
P := Pointer(Cardinal(P) + SizeOf(Integer));
if (Index >= 0) and (Index < Count) then
begin
for I := 0 to Count - 1 do
P := Pointer(Cardinal(P) + StrLen(PUnitName(P)^.Name) + 3);
Result := PUnitName(P)^.Name;
end;
end;
ntRequiresPackage:
if (Index >= 0) and (Index < Count) then
begin
for I := 0 to Index - 1 do
P := Pointer(Cardinal(P) + StrLen(PPkgName(P)^.Name) + 2);
Result := PPkgName(P)^.Name;
end;
ntDcpBpiName:
if PPackageInfoHeader(FInfoTable)^.Flags and pfPackageModule <> 0 then
begin
for I := 0 to Count - 1 do
P := Pointer(Cardinal(P) + StrLen(PPkgName(P)^.Name) + 2);
Count := Integer(P^);
P := Pointer(Cardinal(P) + SizeOf(Integer));
for I := 0 to Count - 1 do
P := Pointer(Cardinal(P) + StrLen(PUnitName(P)^.Name) + 3);
Result := PPkgName(P)^.Name;
end;
end;
end;
function TDelphiPackage.GetShortName: string;
begin
Result := GetInfoName(ntDcpBpiName, 0);
end;
function TDelphiPackage.GetTypeInfoCount(Kinds: TTypeKinds): Integer;
var
I: Integer;
begin
CheckTypeInfos;
Result := 0;
for I := 0 to FTypeInfos.Count - 1 do
if (Kinds = []) or (PTypeInfo(FTypeInfos[I])^.Kind in Kinds) then
Inc(Result);
end;
function TDelphiPackage.GetTypeInfos(Kinds: TTypeKinds; Index: Integer): PTypeInfo;
var
I, J: Integer;
begin
CheckTypeInfos;
Result := nil;
J := -1;
for I := 0 to FTypeInfos.Count - 1 do
if (Kinds = []) or (PTypeInfo(FTypeInfos[I])^.Kind in Kinds) then
begin
Inc(J);
if J = Index then
begin
Result := FTypeInfos[I];
Break;
end;
end;
end;
{ TDelphiPackage public }
constructor TDelphiPackage.Create(AHandle: HMODULE; AInfoTable: Pointer = nil);
begin
inherited Create;
FHandle := AHandle;
FInfoTable := AInfoTable;
FTypeInfos := nil;
end;
destructor TDelphiPackage.Destroy;
begin
FTypeInfos.Free;
inherited Destroy;
end;
initialization
case Win32Platform of
VER_PLATFORM_WIN32_WINDOWS:
EnumModules := EnumModulesTH;
VER_PLATFORM_WIN32_NT:
EnumModules := EnumModulesPS;
else
EnumModules := nil;
end;
finalization
end.
Unité du package de conception de test installé dans l'IDE:
unit Test;
interface
uses
SysUtils, Classes,
ToolsAPI;
type
TTestWizard = class(TNotifierObject, IOTAWizard, IOTAMenuWizard)
private
{ IOTAWizard }
procedure Execute;
function GetIDString: string;
function GetName: string;
function GetState: TWizardState;
{ IOTAMenuWizard }
function GetMenuText: string;
end;
implementation
uses
TypInfo,
PackageUtils;
function AncestryStr(AClass: TClass): string;
begin
Result := '';
if not Assigned(AClass) then
Exit;
Result := AncestryStr(AClass.ClassParent);
if Result <> '' then
Result := Result + '\';
Result := Result + AClass.ClassName;
end;
procedure ShowMessage(const S: string);
begin
with BorlandIDEServices as IOTAMessageServices do
AddTitleMessage(S);
end;
{ TTestWizard }
procedure TTestWizard.Execute;
var
Process: TDelphiProcess;
I, J: Integer;
Package: TDelphiPackage;
PInfo: PTypeInfo;
PData: PTypeData;
begin
Process := TDelphiProcess.Create;
for I := 0 to Process.PackageCount - 1 do
begin
Package := Process.Packages[I];
for J := 0 to Package.TypeInfoCount[[tkClass]] - 1 do
begin
PInfo := Package.TypeInfos[[tkClass], J];
PData := GetTypeData(PInfo);
ShowMessage(Format('%s: %s.%s (%s)', [Package.ShortName, PData^.UnitName, PInfo^.Name, AncestryStr(PData^.ClassType)]));
end;
end;
end;
function TTestWizard.GetIDString: string;
begin
Result := 'TOndrej.TestWizard';
end;
function TTestWizard.GetName: string;
begin
Result := 'Test';
end;
function TTestWizard.GetState: TWizardState;
begin
Result := [wsEnabled];
end;
function TTestWizard.GetMenuText: string;
begin
Result := 'Test';
end;
var
Index: Integer = -1;
initialization
with BorlandIDEServices as IOTAWizardServices do
Index := AddWizard(TTestWizard.Create);
finalization
if Index <> -1 then
with BorlandIDEServices as IOTAWizardServices do
RemoveWizard(Index);
end.
Vous devez ajouter à votre DesignIDE exige l'article. Lorsque vous installez ce package de conception, un nouvel élément de menu Test doit apparaître sous le menu Aide de Delphi. En cliquant dessus, il devrait afficher toutes les classes chargées dans la fenêtre Messages.
Pouvez-vous partager vos résultats? – menjaraz
Vous pouvez obtenir [Recherche de composants] (http://www.torry.net/vcl/experts/ide/componentsearch.zip) à partir des pages Deplhi de Torry. – menjaraz