THotPDF.BeginGraphTransaction Method
Starts a copy-on-write savepoint for the loaded indirect-object graph
宣言
procedure BeginGraphTransaction(const Name: AnsiString= '');ユニット
HPDFDoc
パラメータ
| 名前 | 目的 |
|---|---|
Name | Optional diagnostic name for the savepoint |
戻り値
このプロシージャは値を返しません
使用上の注意
- Starting a transaction indexes current indirect roots but does not copy them
- The first mutation of each indirect root creates one snapshot for the current savepoint
- Transactions may be nested and must be closed in last-in, first-out order