GetLength

如果 CDocBuilderValue 对象是数组/类型化数组，则返回长度。否则返回 0。

请注意，对于 .docbuilder 文件，不使用 CDocBuilderValue.GetLength 方法。

语法

Python

def GetLength(self) -> int

C++

unsigned int GetLength();

COM

HRESULT GetLength([out, retval] long* result);

Java

int getLength();

.Net

unsigned int GetLength();

参数

COM

名称	类型	描述
result	long*	返回的对象长度。

示例

Python

builder = docbuilder.CDocBuilder()
context = builder.GetContext()
globalObj = context.GetGlobal()
api = globalObj["Api"]
document = api.Call("GetDocument")
charts = document.Call("GetAllCharts")
length = charts.GetLength()

C++

std::wstring sWorkDirectory = NSUtils::GetBuilderDirectory();
CDocBuilder::Initialize(sWorkDirectory.c_str());
CDocBuilder oBuilder;
CContext oContext = oBuilder.GetContext();
CValue oGlobal = oContext.GetGlobal();
CValue oApi = oGlobal["Api"];
CValue oDocument = oApi.Call("GetDocument");
CValue aCharts = oDocument.Call("GetAllCharts");
unsigned int nLength = aCharts.GetLength();
CDocBuilder::Dispose();

COM

CoInitialize(NULL);
IONLYOFFICEDocBuilder* oBuilder = NULL;
IONLYOFFICEDocBuilderContext* oContext = NULL;
IONLYOFFICEDocBuilderValue* oGlobal = NULL;
IONLYOFFICEDocBuilderValue* oApi = NULL;
IONLYOFFICEDocBuilderValue* oDocument = NULL;
IONLYOFFICEDocBuilderValue* aCharts = NULL;
long nLength = 0;
oBuilder->Initialize();
oBuilder->GetContext(&oContext);
oContext->GetGlobal(&oGlobal);
oGlobal->GetProperty(_bstr_t("Api"), &oApi);
oApi->Call(_bstr_t("GetDocument"), ATL::CComVariant(), ATL::CComVariant(), ATL::CComVariant(), ATL::CComVariant(), ATL::CComVariant(), ATL::CComVariant(), &oDocument);
oDocument->Call(_bstr_t("GetAllCharts"), ATL::CComVariant(), ATL::CComVariant(), ATL::CComVariant(), ATL::CComVariant(), ATL::CComVariant(), ATL::CComVariant(), &aCharts);
aCharts->GetLength(&nLength);
oBuilder->Dispose();

Java

CDocBuilder.initialize("");
CDocBuilder builder = new CDocBuilder();
CDocBuilderContext context = builder.getContext();
CDocBuilderValue global = context.getGlobal();
CDocBuilderValue api = global.get("Api");
CDocBuilderValue doc = api.call("GetDocument");
CDocBuilderValue charts = doc.call("GetAllCharts");
int length = charts.getLength();
CDocBuilder.dispose();

.Net

string workDirectory = "C:/Program Files/ONLYOFFICE/documentBuilder";
CDocBuilder.Initialize(workDirectory);
CDocBuilder oBuilder = new CDocBuilder();
CContext oContext = oBuilder.GetContext();
CValue oGlobal = oContext.GetGlobal();
CValue oApi = oGlobal["Api"];
CValue oDocument = oApi.Call("GetDocument");
CValue aCharts = oDocument.Call("GetAllCharts");
uint nLength = aCharts.GetLength();
CDocBuilder.Destroy();