[英]Open an Excel document with C++ builder
I am trying to open an existing Excel document using C++ builder. 我正在尝试使用C ++构建器打开现有的Excel文档。 but I am having an exception :
但我有一个例外:
Project project1.exe raised exception class EOlSysError with message "incorrect type of variable"
项目project1.exe引发异常类EOlSysError,并显示消息“变量类型不正确”
Here is the code I'm using : 这是我正在使用的代码:
try {
vMSExcel = Variant::GetActiveObject("Excel.Application");
}
catch (...) {
vMSExcel = Variant::CreateObject("Excel.Application");
}
vMSExcel.OlePropertySet("Visible", true);
Variant vFileName = "C:\\Users\mi\\Desktop\\classeur1.xls";
vXLWorkbooks = vMSExcel.OlePropertyGet("Workbooks");
vXLWorkbook = vXLWorkbooks.OleFunction("Open", vFileName);
The exception is thrown in this line : 这行抛出异常:
vXLWorkbook = vXLWorkbooks.OleFunction("Open", vFileName);
Any help will be appreciated. 任何帮助将不胜感激。 Thank you
谢谢
PROBLEM FIXED : 解决的问题:
I changed the type of vFileName from Vaiant to String and added c_str() to OleFucntion as following 我将vFileName的类型从Vaiant更改为String,并将c_str()添加到OleFucntion,如下所示
vXLWorkbook = vXLWorkbooks.OleFunction( "Open",vFileName.c_str());
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