int iLength = 260;
char* ContainerName;
#ifdef RUN_ON_WEBNAVIGATOR
WaitForDocumentReady("../@AreaButton");
#endif
ContainerName = (char*) SysMalloc( 260 );
*ContainerName = '\0';
SSMShowAreaButtonEx ( lpszPictureName, lpszObjectName, "@area", "@CSIGArea","@ToAreaGroup",ContainerName, iLength);
SetPropChar(lpszPictureName,lpszObjectName,"Tooltiptext",ContainerName);
return ContainerName;
求解以上代码含义