unit Pm;
interface
uses
SysUtils, Classes, DdeMan;
type
EProgManError = class(Exception);
TProgMan = class(TComponent)
private
FDdeClientConv: TDdeClientConv;
procedure InitDDEConversation;
function ExecMacroString(Macro: string): Boolean;
public
constructor Create(AOwner: TComponent); override;
destructor Destroy; override;
procedure CreateGroup(GroupName: string; ShowGroup: Boolean);
procedure DeleteGroup(GroupName: string);
procedure DeleteItem(ItemName: string);
procedure AddItem(CmdLine, ItemName: string);
end;
implementation
uses Utils;
const
{ DDE-макростроки для Program Manager }
SDDECreateGroup = '[CreateGroup(%s)]';
SDDEShowGroup = '[ShowGroup(%s, 1)]';
SDDEDeleteGroup = '[DeleteGroup(%s)]';
SDDEDeleteItem = '[DeleteItem(%s)]';
SDDEAddItem = '[AddItem(%s, "%s", %s)]';
constructor TProgMan.Create(AOwner: TComponent);
begin
inherited Create(AOwner);
InitDDEConversation;
end;
destructor TProgMan.Destroy;
begin
if Assigned(FDDEClientConv) then
FDdeClientConv.CloseLink;
inherited Destroy;
end;
function TProgMan.ExecMacroString(Macro: string): Boolean;
begin
StringAsPchar(Macro);
Result := FDdeClientConv.ExecuteMacro(@Macro[1], False);
end;
procedure TProgMan.InitDDEConversation;
begin
FDdeClientConv := TDdeClientConv.Create(Self);
if not FDdeClientConv.SetLink('PROGMAN', 'PROGMAN') then
raise EProgManError.Create('Не могу установить DDE Link');
end;
procedure TProgMan.CreateGroup(GroupName: string; ShowGroup: Boolean);
begin
{ Удаляем группу, если она существует }
ExecMacroString(Format(SDDEDeleteGroup, [GroupName]));
if not ExecMacroString(Format(SDDECreateGroup, [GroupName])) then
raise EProgManError.Create('Не могу создать группу ' + GroupName);
if ShowGroup then
if not ExecMacroString(Format(SDDEShowGroup, [GroupName])) then
raise EProgManError.Create('Не могу показать группу ' + GroupName);
end;
procedure TProgMan.DeleteGroup(GroupName: string);
begin
if not ExecMacroString(Format(SDDEDeleteGroup, [GroupName])) then
raise EProgManError.Create('Не могу удалить группу ' + GroupName);
end;
procedure TProgMan.DeleteItem(ItemName: string);
begin
if not ExecMacroString(Format(SDDEDeleteGroup, [ItemName])) then
raise EProgManError.Create('Не могу удалить элемент ' + ItemName);
end;
procedure TProgMan.AddItem(CmdLine, ItemName: string);
var
P: PChar;
PSize: Word;
begin
PSize := StrLen(SDDEAddItem) + (Length(CmdLine) * 2) + Length(ItemName) + 1;
GetMem(P, PSize);
try
StrFmt(P, SDDEAddItem, [CmdLine, ItemName, CmdLine]);
if not FDdeClientConv.ExecuteMacro(P, False) then
raise EProgManError.Create('Не могу добавить элемент ' + ItemName);
finally
FreeMem(P, PSize);
end;
end;
end.
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