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authorWilliam Joye <wjoye@cfa.harvard.edu>2019-01-07 19:35:16 (GMT)
committerWilliam Joye <wjoye@cfa.harvard.edu>2019-01-07 19:35:16 (GMT)
commit09e487f0e296d4f8b4d8f52913e0853cd6267ab1 (patch)
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Merge commit 'cea0772af197e912bd0ce13a6ec5b7d936ec077d' as 'tkhtml1'
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+The HTML widget uses lots of TCL callback routines. But a TCL
+callback can do nasty things. For example, a TCL callback
+could delete the HTML widget that invoked the callback. Or
+it could delete the TCL interpreter in which the HTML widget
+is running. So we have to call HtmlLock() before invoking
+a TCL callback and check to make sure the widget was not
+deleted before using any fields in the widget structure after
+the callback runs.
+
+The following routines can call TCL callbacks, either directly
+or indirectly:
+
+ HtmlTokenizerAppend()
+ HtmlParseCmd()
+ HtmlWidgetCommand()
+ HtmlGetImage()
+ HtmlAddStyle()
+ HtmlParseCmd()...
+ HtmlSizer()
+ HtmlLayout()
+ HtmlRedrawCallback()
+ GetLinkColor()
+ HtmlAddStyle()...
+ HtmlCallResolver()
+ HtmlGetImage()...
+ HtmlResolveCmd()
+ HtmlWidgetCommand()
+ HtmlRedrawCallback()...
+ HtmlGetFont()
+ DrawSelectionBackground()
+ HtmlBlockDraw()...
+ HtmlBlockDraw()
+ HtmlRedrawCallback()
+ FindIndexInBlock()
+ DecodeBaseIndex()
+ HtmlGetIndex()
+ HtmlIndexCmd()
+ HtmlWidgetCommand()...
+ HtmlSelectionSetCmd()
+ HtmlWidgetCommand()...
+ HtmlInsertCmd()
+ HtmlWidgetCommand()...
+ Paragraph()
+ DoBreakMarkup()
+ HtmlLayoutBlock()
+ HtmlLayout()...
+ HtmlTableLayout()
+ DoBreakMarkup()...
+ HtmlDeleteControls()
+ HtmlClear()
+ HtmlWidgetCommand()...
+ HtmlDestroyWidget()