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Description
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The PWideChar type
holds a pointer to a WideChar
value.
It can also be used to point to characters within a
WideString, as in the example
code.
As with other pointers, integer arithmetic, such as
Inc and Dec can be performed on a PWideChar
variable, also shown in the example.
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Notes
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PWideChar is
principally used when processing null-terminated
(C-like) strings.
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Related commands
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$ExtendedSyntax
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Controls some Pascal extension handling
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Dec
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Decrement an ordinal variable
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Inc
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Increment an ordinal variable
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PAnsiChar
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A pointer to an AnsiChar value
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PChar
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A pointer to an Char value
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PWideString
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Pointer to a WideString value
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WideChar
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Variable type holding a single International
character
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WideString
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A data type that holds a string of WideChars
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Example code : Display
all characters in a string
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var
myWideString :
WideString;
myWideCharPtr : PWideChar;
i : Integer;
begin
// Create
a string of WideChar's
myWideString :=
'Hello';
// Point
to the first character in the
string
myWideCharPtr :=
Addr(myWideString[1]);
//
Display the string
ShowMessage(myWideCharPtr);
// Now
increment the pointer
Inc(myWideCharPtr,2);
// And
see what is shows now
ShowMessage(myWideCharPtr);
//
Display all characters in the
string
while i <= Length(myWideString)
do
begin
ShowMessage(myWideCharPtr^);
Inc(i);
Inc(myWIdeCharPtr);
end;
end;
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Show full unit code
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Hello
llo
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