inno setup 安裝前判斷進程是否存在，以及停止相應進程

要引入psvince.dll這個dll，放在inno setup的安裝目錄下（與其他dll相同目錄），代碼如下： 

[Files]

Source: compiler:psvince.dll;Flags: dontcopy noencryption

 

[code]
// function IsModuleLoaded to call at install time
// added also setuponly flag
function IsModuleLoaded(modulename: String ):  Boolean;
external 'IsModuleLoaded@files:psvince.dll stdcall setuponly';

// function IsModuleLoadedU to call at uninstall time
// added also uninstallonly flag
function IsModuleLoadedU(modulename: String ):  Boolean;
external 'IsModuleLoaded@{app}\psvince.dll stdcall uninstallonly' ;

//;判斷進程是否存在
function IsAppRunning(const FileName : string): Boolean;
var
    FSWbemLocator: Variant;
    FWMIService   : Variant;
    FWbemObjectSet: Variant;
begin
    Result := false;
    try
      FSWbemLocator := CreateOleObject('WBEMScripting.SWBEMLocator');
      FWMIService := FSWbemLocator.ConnectServer('', 'root\CIMV2', '', '');
      FWbemObjectSet := FWMIService.ExecQuery(Format('SELECT Name FROM Win32_Process Where Name="%s"',[FileName]));
      Result := (FWbemObjectSet.Count > 0);
      FWbemObjectSet := Unassigned;
      FWMIService := Unassigned;
      FSWbemLocator := Unassigned;
    except
      if (IsModuleLoaded(FileName)) then
        begin
          Result := false;
        end
      else
        begin
          Result := true;
        end
      end;
end;

//;通過名稱終結進程
procedure TaskKillProcessByName(AppName: String);
var
  WbemLocator : Variant;
  WMIService   : Variant;
  WbemObjectSet: Variant;
  WbemObject   : Variant;
begin;
  WbemLocator := CreateOleObject('WbemScripting.SWbemLocator');
  WMIService := WbemLocator.ConnectServer('localhost', 'root\CIMV2');
  WbemObjectSet := WMIService.ExecQuery('SELECT * FROM Win32_Process Where Name="' + AppName + '"');
  if not VarIsNull(WbemObjectSet) and (WbemObjectSet.Count > 0) then
  begin
    WbemObject := WbemObjectSet.ItemIndex(0);
    if not VarIsNull(WbemObject) then
    begin
      WbemObject.Terminate();
      WbemObject := Unassigned;
    end;
  end;
end;

//;安裝的時候判斷進程是否存在，存在則先提示是否結束進程
function InitializeSetup(): Boolean;
begin
  Result := true;
  if  IsAppRunning('{#MyAppExeName}') then
  begin
    if MsgBox('安裝程序檢測到 {#MyAppName} 正在運行！'#13''#13'單擊“是”按鈕關閉程序並繼續安裝；'#13''#13'單擊“否”按鈕退出安裝！', mbConfirmation, MB_YESNO) = IDYES then
    begin
      TaskKillProcessByName('{#MyAppExeName}');
      TaskKillProcessByName('{#MyAppExeName}');
      Result:= true;
    end
    else
      Result:= false;
  end;
end;

//;卸載的時候判斷進程是否存在，存在則先提示是否結束進程
function InitializeUninstall(): Boolean;
begin
    Result:= true;
    if  IsAppRunning('{#MyAppExeName}') then
    begin
      if MsgBox('卸載程序檢測到 {#MyAppName} 正在運行！'#13''#13'單擊“是”按鈕關閉程序並繼續卸載；'#13''#13'單擊“否”按鈕退出卸載！', mbConfirmation, MB_YESNO) = IDYES then
      begin
        TaskKillProcessByName('{#MyAppExeName}');
        TaskKillProcessByName('{#MyAppExeName}');
        Result:= true;
      end
      else
        Result:= false;
    end;
    // Unload the DLL, otherwise the dll psvince is not deleted
    UnloadDLL(ExpandConstant('{app}\psvince.dll'));
    DelTree(ExpandConstant('{app}'), True, True, True);
end;