c++ - 创建对话框时没有类或命名空间

Question

我在 ATL dll 文件中创建了一个对话框，并添加了一个类来控制其性能。我最初设法让它编译，但现在(可能因为调整包括)我在编译时收到奇怪的消息:

CTestDlg:没有类或命名空间

下面我引用了header的源码和cpp文件:

#pragma once

#include "resource.h" // Hauptsymbole
#include <atlhost.h>


class CTestDlg : public CAxDialogImpl<CTestDlg>
{
private:
bool m_cancel;


public:
CTestDlg()
{
    m_cancel = true;    
}

~CTestDlg()
{
}

enum { IDD = IDD_TESTDLG };

BEGIN_MSG_MAP(CTestDlg)
MESSAGE_HANDLER(WM_INITDIALOG, OnInitDialog)
COMMAND_HANDLER(IDOK, BN_CLICKED, OnClickedOK)
COMMAND_HANDLER(IDCANCEL, BN_CLICKED, OnClickedCancel)
COMMAND_HANDLER(IDC_EDIT1, EN_CHANGE, OnEnChangeEdit1)
CHAIN_MSG_MAP(CAxDialogImpl<CTestDlg>)
END_MSG_MAP()



LRESULT OnInitDialog(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
    CAxDialogImpl<CTestDlg>::OnInitDialog(uMsg, wParam, lParam, bHandled);
    bHandled = TRUE;

    //CEdit* pEdit = (CEdit*)GetDlgItem(IDC_EDIT1);
    //pEdit->SetWindowTextW(L"Hello");
    CWindow textBox(GetDlgItem(IDC_EDIT1));
    textBox.SetWindowTextW(L"hello");
    //textBox.SendMessageW(WM_SETTEXT, 0, (LPARAM)L"test!!!");
    return 1;  // Das System kann den Fokus festlegen
}

LRESULT OnClickedOK(WORD wNotifyCode, WORD wID, HWND hWndCtl, BOOL& bHandled)
{
    EndDialog(wID);
    m_cancel = false;
    return 0;
}

LRESULT OnClickedCancel(WORD wNotifyCode, WORD wID, HWND hWndCtl, BOOL& bHandled)
{
    EndDialog(wID);
    return 0;
}

LRESULT OnEnChangeEdit1(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/);

bool IsCancelled() const { return m_cancel; }
bool saveFile();

};

//.cpp文件

#include "CTestDlg.h"
#include "stdafx.h"




LRESULT CTestDlg::OnEnChangeEdit1(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
{
return 0;
}

bool CTestDlg::saveFile()
{

OPENFILENAME ofn;
WCHAR szFileName[MAX_PATH] = L"";


ZeroMemory( &ofn , sizeof( ofn));

ofn.lStructSize = sizeof(ofn); 
ofn.hwndOwner = NULL;
ofn.lpstrFilter = (LPCWSTR)L"Text Files (*.txt)\0*.txt\0All Files (*.*)\0*.*\0";
ofn.lpstrFile = (LPWSTR)szFileName;
ofn.nMaxFile = MAX_PATH;
ofn.Flags = OFN_EXPLORER | OFN_FILEMUSTEXIST | OFN_HIDEREADONLY;
ofn.lpstrDefExt = (LPCWSTR)L"txt";

if(GetSaveFileNameW(&ofn))
{
    HANDLE hFile = CreateFile(ofn.lpstrFile, 
        GENERIC_WRITE,
        0,
        NULL, 
        CREATE_NEW,
        FILE_ATTRIBUTE_NORMAL,
        NULL);

    DWORD dwBytesWritten = 0;
    char str[] = "Example text testing WriteFile";
    WriteFile( hFile, str, strlen(str), &dwBytesWritten, NULL );
    CloseHandle(hFile); 

    return true;
}
else 
    return false;

}

关于代码似乎有什么问题的任何指示？

Answer 1

您的预编译头包含应该在.cpp 文件中的第一个，更改:

#include "CTestDlg.h"
#include "stdafx.h"

到

#include "stdafx.h"
#include "CTestDlg.h"

还要仔细检查包含的文件名是否正确