Repeated calls to custom class method causes Page Fault
Divers
Thread ID:
00184056
Message ID:
00184056
Vues:
74
I have created a custom class to return html code as text for an input tag for use in creating html pages for a web server.
I'm sure I could find a class that does this job for me, or I could use standard VFP classes to produce the code and save them as HTML. But this is a learning excersize as well, and I'd sure like to know where I screwed this up.
OK, I create an object from the class as such:
oText1 = CreateObject("HtmlClass.Input") && create an instance oText1.Type = "TEXT" && Assign input tag type oText1.Text = "Text Value" && assign input tag value oText1.FieldName = "TEXT1" && assign input tag name ? oText1.Html() && returns the html code for the complete tag ? oText1.Html() && CAUSES AN INVALID PAGE FAULT
Now for the great part of the excersize: It naturally causes VFP to unload, AND it causes a memory leak. When I restart VFP a few times and do the above, the computer will no longer have enough memory left to load _any_ applications, and I am forced to restart the machine.
Any ideas?
Here's the operative piece, I hope it's not too much (or too little) information:
FUNCTION Html PRIVATE cHtmlCode, cOutput, nError, cErrMessage cHtmlCode = "" cOutput = "" WITH This IF !EMPTY(.Controlsource) .Value = EVAL(.Controlsource) ENDIF IF TYPE(".Caption") # "C" .Caption = " " ENDIF cHtmlCode = CRLF +; TAB + [ .HtmlAttr("NAME", .FieldName) +; .HtmlAttr("TYPE", .Type) DO CASE CASE UPPER(.TYPE) = "CHECKBOX" cHtmlCode = cHtmlCode + .HtmlAttr("Value", .Text) CASE UPPER(.TYPE) = "HIDDEN" cHtmlCode = cHtmlCode + .HtmlAttr("Value", .Text) CASE UPPER(.TYPE) = "IMAGE" cHtmlCode = cHtmlCode + .HtmlAttr("Src", .Src) CASE UPPER(.TYPE) = "PASSWORD" cHtmlCode = cHtmlCode + .HtmlAttr("Size", .Size) + ; .HtmlAttr("MaxLength", .MaxLength) CASE UPPER(.TYPE) = "RADIO" cHtmlCode = cHtmlCode + .HtmlAttr("Value", .Text) CASE UPPER(.TYPE) = "RESET" cHtmlCode = cHtmlCode + .HtmlAttr("Value", .Text) CASE UPPER(.TYPE) = "SUBMIT" cHtmlCode = cHtmlCode + .HtmlAttr("Value", .Text) CASE UPPER(.TYPE) = "TEXT" cHtmlCode = cHtmlCode + .HtmlAttr("Value", .Text) + ; .HtmlAttr("Size", .Size) + ; .HtmlAttr("MaxLength", .MaxLength) CASE UPPER(.TYPE) = "TEXTAREA" cHtmlCode = cHtmlCode + .HtmlAttr("Value", .Text) + ; .HtmlAttr("MaxLength", .MaxLength) + ; .HtmlAttr("Cols", .Cols) + .HtmlAttr("Rows", .Rows) CASE UPPER(.TYPE) = "FILE" *!* This is a Netscape-only feature and not implemented here. ENDCASE cHtmlCode = cHtmlCode + [>] + CRLF IF TYPE(".Caption") = "C" cHtmlCode = cHtmlCode + .Caption + CRLF ENDIF DO CASE CASE cOutput = "M" && Output dest. is Memo REPLACE (pcHtmlOut) WITH EVAL(pcHtmlOut) + cHtmlCode CASE cOutput = "C" && Output dest. is variable STORE EVAL(pcHtmlOut) + cHtmlCode TO (pcHtmlOut) CASE cOutput = "R" && Output dest. is calling program RETURN cHtmlCode ENDCASE ENDWITH
FUNCTION HtmlAttr PARAMETERS cAttributeName, vValue
