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\section{\class{wxQueryCol}}\label{wxquerycol}
Every ODBC data column is represented by an instance of this class.
\wxheading{Derived from}
\helpref{wxObject}{wxobject}
\wxheading{Include files}
<wx/odbc.h>
\wxheading{See also}
\overview{wxQueryCol overview}{wxquerycoloverview}, \overview{wxDatabase overview}{wxdatabaseoverview}
\latexignore{\rtfignore{\wxheading{Members}}}
\membersection{wxQueryCol::wxQueryCol}
\func{void}{wxQueryCol}{\void}
Constructor. Sets the attributes of the column to default values.
\membersection{wxQueryCol::\destruct{wxQueryCol}}
\func{void}{\destruct{wxQueryCol}}{\void}
Destructor. Deletes the wxQueryField list.
\membersection{wxQueryCol::BindVar}
\func{void *}{BindVar}{\param{void *}{v}, \param{long}{ sz}}
Binds a user-defined variable to a column. Whenever a column is bound to a
variable, it will automatically copy the data of the current field into this
buffer (to a maximum of {\it sz} bytes).
\membersection{wxQueryCol::FillVar}
\func{void}{FillVar}{\param{int}{ recnum}}
Fills the bound variable with the data of the field recnum. When no variable
is bound to the column nothing will happen.
\membersection{wxQueryCol::GetData}
\func{void *}{GetData}{\param{int}{ field}}
Returns a pointer to the data of the field.
\membersection{wxQueryCol::GetName}
\func{wxString}{GetName}{\void}
Returns the name of a column.
\membersection{wxQueryCol::GetType}
\func{short}{GetType}{\void}
Returns the data type of a column.
\membersection{wxQueryCol::GetSize}
\func{long}{GetSize}{\param{int}{ field}}
Return the size of the data of the field field.
\membersection{wxQueryCol::IsRowDirty}
\func{bool}{IsRowDirty}{\param{int}{ field}}
Returns true if the given field has been changed, but not saved.
\membersection{wxQueryCol::IsNullable}
\func{bool}{IsNullable}{\void}
Returns true if a column may contain no data.
\membersection{wxQueryCol::AppendField}
\func{void}{AppendField}{\param{void *}{buf}, \param{long}{ len}}
Appends a wxQueryField instance to the field list of the column. {\it len} bytes from\rtfsp
{\it buf} will be copied into the field's buffer.
\membersection{wxQueryCol::SetData}
\func{bool}{SetData}{\param{int}{ field}, \param{void *}{buf}, \param{long}{ len}}
Sets the data of a field. This function finds the wxQueryField corresponding to\rtfsp
{\it field} and calls wxQueryField::SetData with {\it buf} and {\it len} arguments.
\membersection{wxQueryCol::SetName}
\func{void}{SetName}{\param{const wxString\& }{name}}
Sets the name of a column. Only useful when creating new tables or
appending columns.
\membersection{wxQueryCol::SetNullable}
\func{void}{SetNullable}{\param{bool}{ nullable}}
Determines whether a column may contain no data. Only useful when creating new tables or
appending columns.
\membersection{wxQueryCol::SetFieldDirty}
\func{void}{SetFieldDirty}{\param{int}{ field}, \param{bool }{dirty = true}}
Sets the dirty tag of a given field.
\membersection{wxQueryCol::SetType}
\func{void}{SetType}{\param{short}{ type}}
Sets the data type of a column. Only useful when creating new tables or
appending columns.
\section{\class{wxQueryField}}\label{wxqueryfield}
Represents the data item for one or several columns.
\wxheading{Derivation}
\helpref{wxObject}{wxobject}
\wxheading{See also}
\overview{wxQueryField overview}{wxqueryfieldoverview}, \overview{wxDatabase overview}{wxdatabaseoverview}
\latexignore{\rtfignore{\wxheading{Members}}}
\membersection{wxQueryField::wxQueryField}
\func{}{wxQueryField}{\void}
Constructor. Sets type and size of the field to default values.
\membersection{wxQueryField::\destruct{wxQueryField}}
\func{}{\destruct{wxQueryField}}{\void}
Destructor. Frees the associated memory depending on the field type.
\membersection{wxQueryField::AllocData}
\func{bool}{AllocData}{\void}
Allocates memory depending on the size and type of the field.
\membersection{wxQueryField::ClearData}
\func{void}{ClearData}{\void}
Deletes the contents of the field buffer without deallocating the memory.
\membersection{wxQueryField::GetData}
\func{void *}{GetData}{\void}
Returns a pointer to the field buffer.
\membersection{wxQueryField::GetSize}
\func{long}{GetSize}{\void}
Returns the size of the field buffer.
\membersection{wxQueryField::GetType}
\func{short}{GetType}{\void}
Returns the type of the field (currently SQL\_CHAR, SQL\_VARCHAR or SQL\_INTEGER).
\membersection{wxQueryField::IsDirty}
\func{bool}{IsDirty}{\void}
Returns true if the data of a field has been changed, but not saved.
\membersection{wxQueryField::SetData}
\func{bool}{SetData}{\param{void *}{data}, \param{long}{ sz}}
Allocates memory of the size {\it sz} and copies the contents of {\it d} into the
field buffer.
\membersection{wxQueryField::SetDirty}
\func{void}{SetDirty}{\param{bool}{ dirty = true}}
Sets the dirty tag of a field.
\membersection{wxQueryField::SetSize}
\func{void}{SetSize}{\param{long}{ size}}
Resizes the field buffer. Stored data will be lost.
\membersection{wxQueryField::SetType}
\func{void}{SetType}{\param{short }{type}}
Sets the type of the field. Currently the types SQL\_CHAR, SQL\_VARCHAR and
SQL\_INTEGER are supported.
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