在CFileDialog上添加一个CheckBox（MFC cpp）

本文介绍了在CFileDialog上添加一个CheckBox（MFC cpp）的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

您好，

我需要一些紧急帮助来动态添加CFileDialog（SaveAs功能）上的复选框，并获取该事件以进行检查/取消选中向用户显示SaveAs（CFileDialog）。

下面是一些代码，通过它我可以添加一个复选框，但我无法得到它的事件。 />
1. #define MYCHECKBOX 107

2. IFileDialogCustomize * m_pC;

HRESULT hr = p-> QueryInterface（

__uuidof（IFileDialogCustomize），

（LPVOID *）& m_pC）;

3.

Hello,

I need some urgent help to dynamically add a checkbox on the CFileDialog (SaveAs functionality) and get the event for its check/uncheck hit when the SaveAs (CFileDialog) is shown to the user.

Below is a bit of code through which I could add a checkbox but I am unable to get its event.
1. #define MYCHECKBOX 107
2. IFileDialogCustomize *m_pC;
HRESULT hr = p->QueryInterface(
__uuidof(IFileDialogCustomize),
(LPVOID*)&m_pC);
3.

m_pC->StartVisualGroup(1, L"Test");
m_pC->AddCheckButton(MYCHECKBOX L"Test check", isvisible);

m_pC-> EndVisualGroup（）;

4.

m_pC->EndVisualGroup();
4.

class CFileSaveDlg : public CFileDialog
{
    DECLARE_DYNAMIC(CFileSaveDlg)

....

....

}

我无法获得复选框勾选事件执行某些操作。

我尝试过使用HookProc和FileDialogControlEvents，但我想我错过了一些东西。

我也尝试过以下文章：

[ ]

和

[]

来自Vista好东西我可以运行样品但不能实施所需的活动。

如果能得到一个示例项目，我会很高兴。

开发工具包：Visual Studio 2008 IDE

平台：Windows 7 64位

问候，

Kalyani

....
....
}

I am unable to get the checkbox tick event to perform some operation.
I have tried using HookProc and also FileDialogControlEvents but I guess I am missing some things.
I also tried to follow the below articles:
XFolderDialog - a folder selection dialog based on CFileDialog[^]
and
Vista Goodies in C++: Using the New Vista File Dialogs[^]
From Vista goodies I could run the sample but could not implement the required event.

I would be glad if I can get a sample project for this.

Dev Toolkit: Visual Studio 2008 IDE
Platform: Windows 7 64bit

Regards,
Kalyani

推荐答案

#include "afxdlgs.h"
class CDlgEventHandler : public CComObjectRootEx<CComSingleThreadModel>,
                         public CComCoClass<CDlgEventHandler>,
                         public IFileDialogEvents,
                         public IFileDialogControlEvents
{
public:
    CDlgEventHandler();
    ~CDlgEventHandler();

    BEGIN_COM_MAP(CDlgEventHandler)
        COM_INTERFACE_ENTRY(IFileDialogEvents)
        COM_INTERFACE_ENTRY(IFileDialogControlEvents)
    END_COM_MAP()

    // IFileDialogEvents
    STDMETHODIMP OnFileOk(IFileDialog* pfd);
    STDMETHODIMP OnFolderChanging(IFileDialog* pfd, IShellItem* psiFolder);
    STDMETHODIMP OnFolderChange(IFileDialog* pfd);
    STDMETHODIMP OnSelectionChange(IFileDialog* pfd);
    STDMETHODIMP OnShareViolation(IFileDialog* pfd, IShellItem* psi, FDE_SHAREVIOLATION_RESPONSE* pResponse);
    STDMETHODIMP OnTypeChange(IFileDialog* pfd);
    STDMETHODIMP OnOverwrite(IFileDialog* pfd, IShellItem* psi, FDE_OVERWRITE_RESPONSE* pResponse);

    // IFileDialogControlEvents
    STDMETHODIMP OnCheckButtonToggled(IFileDialogCustomize* pfdc, DWORD dwIDCtl, BOOL bChecked);
	STDMETHODIMP OnItemSelected(IFileDialogCustomize* pfdc, DWORD dwIDCtl, DWORD dwIDItem);
    STDMETHODIMP OnButtonClicked(IFileDialogCustomize* pfdc, DWORD dwIDCtl);
    STDMETHODIMP OnControlActivating(IFileDialogCustomize* pfdc, DWORD dwIDCtl);
};

.cpp文件：

.cpp file:

// DlgEventHandler.h : interface of the CDlgEventHandler class

CDlgEventHandler::CDlgEventHandler()
{
}

CDlgEventHandler::~CDlgEventHandler()
{
}


/////////////////////////////////////////////////////////////////////////////
// IFileDialogEvents methods

STDMETHODIMP CDlgEventHandler::OnFileOk ( IFileDialog* pfd )
{
    return S_OK;    // allow the dialog to close
}

STDMETHODIMP CDlgEventHandler::OnFolderChanging ( IFileDialog* pfd, IShellItem* psiFolder )
{
    return S_OK;    // allow the change
}

STDMETHODIMP CDlgEventHandler::OnFolderChange ( IFileDialog* pfd )
{
    return S_OK;
}

STDMETHODIMP CDlgEventHandler::OnSelectionChange ( IFileDialog* pfd )
{
    return S_OK;
}

STDMETHODIMP CDlgEventHandler::OnShareViolation (
    IFileDialog* pfd, IShellItem* psi, FDE_SHAREVIOLATION_RESPONSE* pResponse )
{
    return S_OK;
}

STDMETHODIMP CDlgEventHandler::OnTypeChange ( IFileDialog* pfd )
{
    ATLTRACE(">> OnTypeChange\n");
    return S_OK;
}

STDMETHODIMP CDlgEventHandler::OnOverwrite (
    IFileDialog* pfd, IShellItem* psi, FDE_OVERWRITE_RESPONSE* pResponse )
{
    return S_OK;
}


/////////////////////////////////////////////////////////////////////////////
// IFileDialogControlEvents methods

STDMETHODIMP CDlgEventHandler::OnItemSelected (
    IFileDialogCustomize* pfdc, DWORD dwIDCtl, DWORD dwIDItem )
{ 
    return S_OK;
}

STDMETHODIMP CDlgEventHandler::OnButtonClicked (
    IFileDialogCustomize* pfdc, DWORD dwIDCtl )
{
    return S_OK;
}

STDMETHODIMP CDlgEventHandler::OnCheckButtonToggled (
    IFileDialogCustomize* pfdc, DWORD dwIDCtl, BOOL bChecked )
{

    ATLTRACE(">> OnCheckButtonToggled, button ID: %u, checked?: %d\n", dwIDCtl, bChecked);
    //dwIDCtl - ID of the checkbox clicked
    //Using pfdc we can control other events that we wanted to control on this click
    return S_OK;
}

STDMETHODIMP CDlgEventHandler::OnControlActivating (
    IFileDialogCustomize* pfdc, DWORD dwIDCtl )
{
    return S_OK;
}

如何致电：

// my_dlg是派生自的类的对象CFileDialog

CComObjectStackEx< cdlgeventhandler> cbk;

CComQIPtr< ifiledialogevents> pEvents = cbk.GetUnknown（）;

DWORD dwCookie;

CComQIPtr< ifiledialog> pDlg = my_dlg.GetIFileDialogCustomizePointer（）;

HRESULT hr = pDlg->建议（pEvents，& dwCookie）;

bool bAdvised =成功（小时）;

if（my_dlg.DoModal（）！= IDOK）

{

//调用Unadvise（）停止倾听

if（bAdvised）

pDlg-> Unadvise（dwCookie）;

my_dlg.DestroyWindow（）;

返回;

}

问候，

Kalyani

How to call:
//my_dlg is the object of class derived from CFileDialog

CComObjectStackEx<cdlgeventhandler> cbk;
CComQIPtr<ifiledialogevents> pEvents = cbk.GetUnknown();
DWORD dwCookie;
CComQIPtr<ifiledialog> pDlg = my_dlg.GetIFileDialogCustomizePointer();

HRESULT hr = pDlg->Advise ( pEvents, &dwCookie );
bool bAdvised = SUCCEEDED(hr);
if (my_dlg.DoModal() != IDOK)
{
// Call Unadvise() to stop listening
if ( bAdvised )
pDlg->Unadvise ( dwCookie );
my_dlg.DestroyWindow();
return;
}
Regards,
Kalyani

这篇关于在CFileDialog上添加一个CheckBox（MFC cpp）的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！

CfileDialog