我将最近的项目放在 UpdateProperty 内
TRecentItem = class(TInterfacedObject, IUISimplePropertySet)
private
FRecentFile: TSSettings.TRecentFile;
protected
function GetValue(const key: TUIPropertyKey; out value: TPropVariant): HRESULT; stdcall;
public
procedure Initialize(const RecentFile: TSSettings.TRecentFile); safecall;
end;
function TMyForm.UpdateProperty(commandId: UInt32; const key: TUIPropertyKey;
currentValue: PPropVariant; out newValue: TPropVariant): HRESULT;
var
I: Integer;
psa: PSafeArray;
pv: Pointer;
RecentItem: TRecentItem;
begin
if (key = UI_PKEY_RecentItems) then
begin
psa := SafeArrayCreateVector(VT_UNKNOWN, 0, Settings.RecentFiles.Count);
if (not Assigned(psa)) then
Result := E_FAIL
else
begin
for I := 0 to Settings.RecentFiles.Count - 1 do
begin
RecentItem := TRecentItem.NewInstance() as TRecentItem;
RecentItem.Initialize(Settings.RecentFiles[I]);
pv := Pointer(IUnknown(RecentItem));
Check(SafeArrayPutElement(psa, I, pv^));
end;
Result := UIInitPropertyFromIUnknownArray(UI_PKEY_RecentItems, psa, PropVar);
SafeArrayDestroy(psa);
end;
end;
如果更改了引脚,我会在关闭应用程序菜单时收到此命令:
function TMyForm.Execute(commandId: UInt32; verb: _UIExecutionVerb;
key: PUIPropertyKey; currentValue: PPropVariant;
commandExecutionProperties: IUISimplePropertySet): HRESULT; stdcall;
var
Count: Integer;
I: Integer;
Pinned: Boolean;
psa: PSafeArray;
pv: IUnknown;
RecentFile: UInt32;
SimplePropertySet: IUISimplePropertySet;
Value: TPropVariant;
begin
if ((commandId = cmdAppRecentItems)
and Assigned(key) and (key^ = UI_PKEY_RecentItems)
and Assigned(currentValue) and (currentValue^.vt = VT_ARRAY + VT_UNKNOWN)) then
begin
psa := nil;
Result := UIPropertyToIUnknownArrayAlloc(key^, currentValue^, psa);
if (Succeeded(Result)) then
begin
Result := SafeArrayGetUBound(psa, 1, Count);
for I := 0 to Count do
if (Succeeded(Result)) then
begin
Result := SafeArrayGetElement(psa, I, pv);
if (Succeeded(Result) and Assigned(pv)) then
begin
Result := pv.QueryInterface(IUISimplePropertySet, SimplePropertySet);
if (Succeeded(Result)) then
Result := SimplePropertySet.GetValue(UI_PKEY_Pinned, Value);
if (Succeeded(Result)) then
Result := UIPropertyToBoolean(UI_PKEY_Pinned, Value, Pinned);
if (Succeeded(Result)) then
Settings.RecentFiles.SetPinned(I, Pinned);
end;
end;
SafeArrayDestroy(psa);
end;
end
end;
...但我没有找到该解决方案的文档。