具有Inno设置的AppMutex:等待几秒钟，然后提示 [英] AppMutex with Inno Setup: Wait few seconds before prompt

问题描述

将Inno设置与AppMutex一起使用可以很好地工作-启动设置并且互斥锁仍然退出时，系统会提示用户关闭此应用程序.

Using Inno Setup together with an AppMutex works fine - when the setup is started and the mutex still exits, the user is prompted to close this application.

但是下面的问题: 如果程序自身关闭，是否有办法告诉Inno Setup等待2-3秒，然后才向用户显示此提示?

But following question: Is there a way to tell Inno Setup to wait 2-3 seconds if the program closes itself before showing the user this prompt?

原因是我正在从程序本身运行Inno设置以进行自动更新.在执行安装文件后，程序会立即自行关闭，但是很显然，这会花费太长时间(至少在某些系统上).因此，即使程序已经关闭，Inno Setup也会向用户显示此对话框(在本例中为无用对话框).

The reason is that I'm running the Inno Setup from the program itself for auto-update purpose. Directly after the setup file is executed the program closes itself, but obviously that takes too long (at least on some systems). So Inno Setup shows this - in this case - useless dialog to the user although the program is closing itself already.

因此，我希望Inno Setup等待2-3秒，并且只有在此之后互斥锁仍然存在的情况下，它才应该向用户显示提示.

Therefore I would like to accomplish that Inno Setup waits 2-3 seconds and only if the mutex still exists after that time it should show the prompt to the user.

有没有办法做到这一点?

Is there a way to accomplish this?

推荐答案

根据这种要求，您不能使用内置的

With such requirement, you cannot use the built-in AppMutex directive.

您必须使用 CheckForMutexes函数实现互斥体检查:

You have to implement the mutex check yourself using CheckForMutexes function:

[Code]

const
  MutexName = 'MutexName';

function InitializeSetup: Boolean;
var
  WaitInterval: Integer;
  Wait: Integer;
begin
  Wait := 3000;

  WaitInterval := 250;
  while (Wait > 0) and CheckForMutexes(MutexName) do
  begin
    Log('Application is still running, waiting');
    Sleep(WaitInterval);
    Wait := Wait - WaitInterval;
  end;

  while CheckForMutexes(MutexName) do
  begin
    if MsgBox(
         FmtMessage(SetupMessage(msgSetupAppRunningError), ['MyApplication']),
         mbError, MB_OKCANCEL) <> IDOK then
    begin
      Abort;
    end;
  end;

  Result := True;
end;

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