如何在c++中获取Excel单元格值

How to get Excel cell value in C++

本文关键字：Excel 单元格 获取 c++      更新时间：2023-10-16

如果有人知道如何从Excel::窗口指针到打开的Excel单元格的实际值，请让我知道。以下是任务条件:- Excel目前在一个窗口中运行，一个工作簿在一个工作表上-一些单元格有数据(为了简化，我们假设只有一个单元格[1,1]有数据，即"a")问题是如何发现只有一个单元格有数据，单元格是[1,1]，数据是"a"。下面是一个代码片段:

int main( int argc, CHAR* argv[])
{
   CoInitialize( NULL );
   HWND excelWindow = FindWindow(L"XLMAIN", NULL);
   EnumChildWindows(excelWindow, (WNDENUMPROC) EnumChildProc, (LPARAM)1);
   return 0;
}
BOOL CALLBACK EnumChildProc(HWND hwnd, LPARAM)
{
   WCHAR szClassName[64];
   if(GetClassNameW(hwnd, szClassName, 64))
   {
      if(_wcsicmp(szClassName, L"EXCEL7") == 0)
      {
         Excel::Window* pWindow = NULL;
         HRESULT hr = AccessibleObjectFromWindow(hwnd, OBJID_NATIVEOM, __uuidof(Excel::Window), (void**)&pWindow);
         if(hr == S_OK)
         {
            // Here we need to answer the question using pWindow                
            pWindow->Release();
         }
         return false;     
      }     
   }
   return true;
}

下面是最终使用的代码:

#include <windows.h>
#include <oleacc.h>
#import "C:Program Files (x86)Common Filesmicrosoft sharedOFFICE14MSO.DLL" no_implementation rename("RGB", "ExclRGB") rename("DocumentProperties", "ExclDocumentProperties") rename("SearchPath", "ExclSearchPath")
#import "C:Program Files (x86)Common Filesmicrosoft sharedVBAVBA6VBE6EXT.OLB" no_implementation
#import "C:Program Files (x86)Microsoft OfficeOffice14EXCEL.EXE" rename("DialogBox", "ExclDialogBox") rename("RGB", "ExclRGB") rename("CopyFile", "ExclCopyFile") rename("ReplaceText", "ExclReplaceText")
#include <string>
using std::string;
BOOL CALLBACK EnumChildProc(HWND hwnd, LPARAM)
{
    WCHAR szClassName[64];
    if(GetClassNameW(hwnd, szClassName, 64))
    {
        if(_wcsicmp(szClassName, L"EXCEL7") == 0)
        {
            //Get AccessibleObject
            Excel::Window* pWindow = NULL;
            IDispatch* pXlSheet = NULL;
            HRESULT hr = AccessibleObjectFromWindow(hwnd, OBJID_NATIVEOM, __uuidof(Excel::Window), (void**)&pWindow);
            if(hr == S_OK)
            {               
                try {
                    VARIANT result;
                    VariantInit(&result);
                    AutoWrap(DISPATCH_PROPERTYGET, &result, pWindow, L"ActiveSheet", 0);
                    pXlSheet = result.pdispVal;
                    _variant_t sheetName;
                    VariantInit(&sheetName);
                    if ((pXlSheet != NULL) && (pXlSheet != (IDispatch*)0xCCCCCCCC))
                    AutoWrap(DISPATCH_PROPERTYGET, &sheetName, pXlSheet, L"Name", 0); 
                    // get cell which you need
                    string location = "C5"; 
                    location += ":" + location; // cell is a range with the same start/end cells
                    OLECHAR *sOleText=new OLECHAR[location.length()+1];
                    mbstowcs(sOleText,location.c_str(),location.length()+1);
                    IDispatch *pXlRange; // Get Range from Sheet
                    VARIANT parm;
                    parm.vt = VT_BSTR;
                    parm.bstrVal = ::SysAllocString(sOleText); 
                    VARIANT result;
                    VariantInit(&result);
                    AutoWrap(DISPATCH_PROPERTYGET, &result, pXlSheet, L"Range", 1, parm);
                    VariantClear(&parm);
                    pXlRange = result.pdispVal;
                    Excel::RangePtr cell = pXlRange;
                    Excel::CharactersPtr ptr = cell->Characters;
                    _bstr_t text = ptr->Text; // here is needed text
                } catch (...) { }
            }
            return false;     // Stops enumerating through children
        }       
    }
    return true;
}
void main( int argc, CHAR* argv[])
{
    CoInitialize(NULL);
    HWND excelWindow = FindWindow(L"XLMAIN", NULL);
    EnumChildWindows(excelWindow, (WNDENUMPROC) EnumChildProc, (LPARAM)1);
    CoUninitialize();
}

AutoWrap()函数取自http://support.microsoft.com/kb/216686/en-us?fr=1，而初始示例取自http://www.northatlantawebdesign.com/index.php/2009/07/15/access-microsoft-excel-2007-com-api-through-microsoft-active-accessibility/感谢所有帮助过我的人。

丹尼尔，

我相信你正在使用Excel COM来访问它。我从来没有使用c++做过这个，但我想它应该和c#没有太大的不同。最困难的任务应该是导入必要的库。但我相信你已经这样做了。

你应该这样写:

int full_cells = 0;
Excel::_Worksheet worksheet = pWindow->ActiveSheet;
for(int j = 1; j < worksheet.Columns.Count; j++)
{
    for (int i = 1; i < worksheet.Rows.Count; i++)
    {
        if(worksheet.Cells[i][j].Value != "")
        {
            full_cells++;
            cout << worksheet.Cells[i][j].Value;
        }
     }
}

请注意，我还没有测试这段代码。我只是给你们展示它应该是什么样子。您应该在这里阅读文档:http://msdn.microsoft.com/en-us/library/ms262200.aspx并正确使用它。

希望能有所帮助。

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