THotPDF Custom Stream Filter Registry Methods

Inspects, removes, clears, and measures application-defined stream filters

声明

function UnregisterCustomStreamFilter(
  const FilterName: AnsiString): Boolean;
procedure ClearCustomStreamFilters;
function GetCustomStreamFilterCount: Integer;
function GetCustomStreamFilterName(Index: Integer): AnsiString;
function GetCustomStreamFilterStatistics(
  out Statistics: THPDFCustomStreamFilterStatistics): Boolean;
procedure ResetCustomStreamFilterStatistics;

参数

FilterName 不区分大小写、不带前导斜杠地匹配，Index 按稳定的当前注册顺序寻址，Statistics 接收一份一致的快照

返回值

unregister 返回该名称是否存在，count 返回当前的注册数量，name 返回规范化后的名称，statistics 返回是否存在注册或调用尝试

使用说明

An invalid name index raises EArgumentOutOfRangeException
被移除的接口会在注册表锁释放之后才被释放
Clearing registrations does not reset telemetry
Resetting telemetry does not clear registrations

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