IsLibrary()
语法
Result = IsLibrary(#Library)概要
Tests if the given library number is valid and if the library has been correctly initialized.
参数
#Library The library value to test.
返回值
Returns nonzero if the input is a valid library and zero if not.
Remarks
This function is bulletproof and may be used with any value. This is the correct way to ensure a library is ready for use.
参阅
OpenLibrary(), CloseLibrary()
已支持操作系统
所有