C ++ Windows凭据提供程序进度屏幕

Question

我正在开发自定义凭据提供程序，我必须显示带有取消按钮的进度屏幕。我在一些凭据提供程序和pgina插件中看到，当凭证提供程序正在运行时，屏幕会显示带有“取消”按钮。我附上了它的截图。我已设法使用以下代码使用“确定”按钮显示错误屏幕：

*pcpgsr = CPGSR_NO_CREDENTIAL_NOT_FINISHED;
SHStrDupW(L"Authentication Failed", ppwszOptionalStatusText);
*pcpsiOptionalStatusIcon = CPSI_ERROR;

现在我需要使用取消按钮显示此进度屏幕。有什么建议可以实现吗？此外，如何处理按下此按钮时触发的事件？

Answer 1

据我了解你的场景，你想在后台做一些事情向用户呈现“等待屏幕”。

您必须为后台工作运行单独的线程，并更改凭据磁贴的布局，以便只显示一个带有“等待...”内容且没有提交按钮的文本元素。

一旦您的后台线程完成其工作，您可以显示提交按钮并让用户继续登录。

例如，看看嵌入式Smartcard Credential Porvider及其插入和移除卡的行为。

Answer 2

@js.hrt您可以将主线程作为对话框运行，而后台线程可以完成工作。取消按钮将是对话框中的控件，允许取消它。如果您需要更多信息，请告诉我，我可以提供一些细节，因为这是我们这样做的方式。

@js.hrt简而言之，您需要两个类：对话框和线程。创建对话框时，它将创建一个运行所需内容的线程，并显示“取消”按钮。单击它将终止您的线程。下面是一些代码。希望能帮助到你。

class Thread  {
    public:
        Thread(GUI* object);
        virtual ~Thread();
        bool start( bool )   {
        ::CreateThread( NULL, 0, threadRun, lpParameter, dwCreationFlags, 
             &m_dwThreadId );
        }
        static DWORD WINAPI threadRun( void* lpVoid )   {
            DWORD dwReturn( 0 );
            dwReturn = m_object->yourProcessToRun();
            return dwReturn;
         }
    protected:
        GUI* m_object;
        Runnable* m_lpRunnable;
};

然后，为您的UI类，类似于此

#include "atlwin.h"

class GUI: public CDialogImpl<GUI>  {
   public:
      enum { IDD = IDD_FOR_YOUR_DIALOG  };
      GUI();
     ~GUI();
      BEGIN_MSG_MAP(GUI)
          MESSAGE_HANDLER(WM_INITDIALOG,OnInitDialog)
          COMMAND_ID_HANDLER(ID_CANCEL,OnCancel)
          MESSAGE_HANDLER(WM_TIMER,OnTimer)
          MESSAGE_HANDLER(WM_DESTROY,OnDestroy)
      END_MSG_MAP()
      LRESULT OnInitDialog(UINT,WPARAM,LPARAM, BOOL&) {
          myThread = new Thread(this);
          m_nTimerID = SetTimer(1,3000,NULL);
          myThread->start();
      }
      LRESULT OnCancel(WORD,WORD,HWND,BOOL& )  {
          if(NULL != myThread)  {
             DWORD exitCode = 0;
             myThread->getExitCode(exitCode);
             if(exitCode == STILL_ACTIVE)
                 myThread->terminate();
             delete myThread;
              myThread = NULL;
           }
           EndDialog(IDCANCEL);
           return true;
      }        
      LRESULT OnTimer(UINT,WPARAM wParam,LPARAM,BOOL&)  {
          if(wParam != m_nTimerID)
              return FALSE;
          m_timerticks++;
          return FALSE;
      }
      LRESULT OnDestroy(UINT,WPARAM,LPARAM,BOOL&)  {
          KillTimer(m_nTimerID);
          return FALSE;
      }
      virtual int yourProcessToRun() {};
      void onFinishProgress(int retCode = IDOK) {
          if (retCode != IDCANCEL)  {
              delete myThread;
              myThread = NULL;
              KillTimer(m_nTimerID);
              EndDialog(retCode);
           }
       }

      private:
          Thread* myThread;
           UINT    m_nTimerID;
           UINT    m_timerticks;
 };

对话框的资源可能是这样的：

IDD_FOR_YOUR_DIALOG DIALOGEX 0, 0, 309, 80
       STYLE DS_SETFONT | DS_MODALFRAME | DS_FIXEDSYS | DS_CENTER | WS_POPUP 
       | WS_CAPTION
CAPTION "Whatever"
FONT 8, "MS Shell Dlg", 400, 0, 0x0
BEGIN
    PUSHBUTTON      "Cancel",ID_CANCEL,113,50,84,14
    CTEXT           "Static",IDC_FOR_SOMETHING,7,7,295,20
END

@ js.hrt如果您不介意发布您的代码，我会让它运行。无法直接评论您的消息，因为我限制了网站要求

Answer 3

@ js.hrt根据您的要求。

class Thread  {
public:
    Thread(GUI* object);
    virtual ~Thread();
    bool start( bool )   {
    ::CreateThread( NULL, 0, threadRun, lpParameter, dwCreationFlags, 
         &m_dwThreadId );
    }
    static DWORD WINAPI threadRun( void* lpVoid )   {
        DWORD dwReturn( 0 );
        dwReturn = m_object->yourProcessToRun();
        return dwReturn;
     }
protected:
    GUI* m_object;
    Runnable* m_lpRunnable;

};然后，为您的UI类，类似于此

#include "atlwin.h"

class GUI: public CDialogImpl<GUI>  {
public:
  enum { IDD = IDD_FOR_YOUR_DIALOG  };
  GUI();
 ~GUI();
  BEGIN_MSG_MAP(GUI)
      MESSAGE_HANDLER(WM_INITDIALOG,OnInitDialog)
      COMMAND_ID_HANDLER(ID_CANCEL,OnCancel)
      MESSAGE_HANDLER(WM_TIMER,OnTimer)
      MESSAGE_HANDLER(WM_DESTROY,OnDestroy)
  END_MSG_MAP()
  LRESULT OnInitDialog(UINT,WPARAM,LPARAM, BOOL&) {
      myThread = new Thread(this);
      m_nTimerID = SetTimer(1,3000,NULL);
      myThread->start();
  }
  LRESULT OnCancel(WORD,WORD,HWND,BOOL& )  {
      if(NULL != myThread)  {
         DWORD exitCode = 0;
         myThread->getExitCode(exitCode);
         if(exitCode == STILL_ACTIVE)
             myThread->terminate();
         delete myThread;
          myThread = NULL;
       }
       EndDialog(IDCANCEL);
       return true;
  }        
  LRESULT OnTimer(UINT,WPARAM wParam,LPARAM,BOOL&)  {
      if(wParam != m_nTimerID)
          return FALSE;
      m_timerticks++;
      return FALSE;
  }
  LRESULT OnDestroy(UINT,WPARAM,LPARAM,BOOL&)  {
      KillTimer(m_nTimerID);
      return FALSE;
  }
  virtual int yourProcessToRun() {};
  void onFinishProgress(int retCode = IDOK) {
      if (retCode != IDCANCEL)  {
          delete myThread;
          myThread = NULL;
          KillTimer(m_nTimerID);
          EndDialog(retCode);
       }
   }

  private:
      Thread* myThread;
       UINT    m_nTimerID;
       UINT    m_timerticks;

};对话框的资源可能是这样的：

IDD_FOR_YOUR_DIALOG DIALOGEX 0, 0, 309, 80
   STYLE DS_SETFONT | DS_MODALFRAME | DS_FIXEDSYS | DS_CENTER | WS_POPUP 
   | WS_CAPTION
CAPTION "Whatever"
FONT 8, "MS Shell Dlg", 400, 0, 0x0
BEGIN
    PUSHBUTTON      "Cancel",ID_CANCEL,113,50,84,14
    CTEXT           "Static",IDC_FOR_SOMETHING,7,7,295,20
END