如何使用 OLE 检查文件是否在 Excel 中打开（使 Excel 进程保持打开状态）

Question

如何检查文件是否已在某些 Excel 实例中打开？

我使用 DXL (DOORS) 语言，但它应该独立于该语言。

是否有任何 OLE 方法可以调用来检查打开了哪个文件并将其与路径/文件名进行比较？

如果可能的话，我可以只关闭该 Excel 应用程序中的工作表/文件吗？

编辑： 这就是我到目前为止所得到的，这有效但只能一次。 DXL 使 Excel.exe 进程保持打开状态，并在接下来的检查中检查所使用的实例是否没有打开的工作簿，甚至根本没有窗口。

        if (confirm "File \"" fPath "\" already exists. Do you want to overwrite it?") {

        // check if file is opened in any Excel instance
        OleAutoObj oleWorkbooks     = null;
        OleAutoObj oleExcel         = null;
        OleAutoObj oleWorkbook      = null;
        OleAutoArgs autoArgs = create;

        oleExcel = oleGetAutoObject("Excel.Application");
        bool opened = false;
        // if excel is opened
        if(oleExcel != null){
            d("Excel is opened");
            // Get workbooks and open file
            oleGet(oleExcel,"Workbooks", oleWorkbooks);

            // compare each open workbook
            int count = 0;
            oleGet(oleWorkbooks,"Count", count);
            string workbookname = "";
            string sPath = replace(fPath, "\\", "/");
            sPath = stripPath(sPath, true);

            while (count > 0) {
                d("checking opened document");
                clear(autoArgs);
                put(autoArgs, count);
                oleGet(oleWorkbooks,"Item", autoArgs, oleWorkbook);
                oleGet(oleWorkbook, "Name", workbookname);
                opened = sPath == workbookname;
                if(opened) {
                    if(confirm "The file is currently opened in Excel. It must be closed. Do you want to close the document?") {
                        clear(autoArgs);
                        oleMethod(oleWorkbook,"Close",autoArgs);
                    }
                    break;  
                }
                count--;
            }
        }
        oleCloseAutoObject(oleExcel);
        oleCloseAutoObject(oleWorkbooks);
        oleCloseAutoObject(oleWorkbook);
        // todo leaves excel process open

        if(!opened) {
            streamOutputData = write fPath;
            streamOutputData << sOutput;
            close streamOutputData;
            return true;    
        }
    }

Answer 1

使用现有的 DXL 方法 canOpenFile(string path, bool write) 解决了这个问题：

if (confirm "File \"" fPath "\" already exists. Do you want to overwrite it?") {
        if(canOpenFile(fPath, true)) {
            streamOutputData = write fPath;
            streamOutputData << sOutput;
            close streamOutputData;
            return true;    
        }
        else {
            e("File \"" fPath "\" is opened in another program. Close it! (It's probably Excel ;) )");
        }
    }

Answer 2

我不知道 DXL，但这就是您可以在 VBA 中执行的操作，我让您将其调整为 DXL：

Sub IsXLBookOpen(strName As String) 

     'Procedure designed to test if a specific Excel
     'workbook is open or not.

    Dim i As Long, XLAppFx As Excel.Application 

     'Find/create an Excel instance
    On Error Resume Next 
    Set XLAppFx = GetObject(, "Excel.Application") 
    If Err.Number = 429 Then 
        Set XLAppFx = CreateObject("Excel.Application") 
        Err.Clear 
    End If 
    On Error GoTo 0

     'Loop through all open workbooks in such instance
    For i = 1 To XLAppFx.Workbooks.Count
        If XLAppFx.Workbooks(i).Name = strName Then
           MsgBox("The workbook is open")
           'Close the workbook and ask if user wants to save
           XLAppFx.Workbooks(i).Close
           'Force close and save changes
           XLAppFx.Workbooks(i).Close True
    Next i 
End Sub

改编自 这里