在我的項目中,我試圖讀取一個excel文件。然而,奇怪的事情發生了。當我打開excel可見時,它會正確執行。當我將它設置爲不可見時,它不會打開我的文件。奇怪的閱讀excel錯誤與Qt
的Qt版本:QT-開源窗口86 msvc2015_64-5.7.0
Windows版本:64位贏得-10
錯誤信息在控制檯:
QAxBase:錯誤調用的IDispatch成員開放:未知錯誤
的代碼讀取Excel文件:
QAxObject *excel = NULL;
QAxObject *workbooks = NULL;
QAxObject *workbook = NULL;
excel = new QAxObject("Excel.Application");
excel->dynamicCall("SetVisible(bool)", false);
// The code to set invisible, project will work correctly when set visible true
workbooks = excel->querySubObject("WorkBooks");
if(!workbooks){
QMessageBox msgBox;
msgBox.setWindowTitle("error information");
msgBox.setText("workbooks error");
msgBox.exec();
return;
}
workbook = workbooks->querySubObject("Open(const QString&, QVariant)", file->filePath, 0);
//This code will not execute correctly, causing "workbook error"
if(!workbook){
QMessageBox msgBox;
msgBox.setWindowTitle("error information");
msgBox.setText("workbook error");
msgBox.exec();
return;
}
QAxObject * worksheet = workbook->querySubObject("WorkSheets(int)", 1);
QAxObject * usedrange = worksheet->querySubObject("UsedRange");
QAxObject * rows = usedrange->querySubObject("Rows");
QAxObject * columns = usedrange->querySubObject("Columns");
int intRowStart = usedrange->property("Row").toInt();
int intColStart = usedrange->property("Column").toInt();
int intCols = columns->property("Count").toInt();
int intRows = rows->property("Count").toInt();
workbook->dynamicCall("Close (Boolean)", false);
delete excel;
雖然這段代碼片段是受歡迎的,並且可能會提供一些幫助,但如果它包含* how *和* why *的解釋(// meta.stackexchange.com/q/114762)解決了這個問題。請記住,你正在爲將來的讀者回答這個問題,而不僅僅是現在問的人!請編輯您的答案以添加解釋,並指出適用的限制和假設。 –