Печать структуры таблицы Paradox
Печать структуры таблицы Paradox
procedureTForm1.Button1Click(Sender: TObject);
const
FieldTypes: array[0..16] of string[10] = ('Unknown', 'String', 'Smallint',
'Integer', 'Word', 'Boolean', 'Float', 'Currency', 'BCD', 'Date', 'Time',
'DateTime', 'Bytes', 'VarBytes', 'Blob', 'Memo', 'Graphic');
var
i, nX, nY, nHeight, nWidth: Integer;
rtxtMetric: TTextMetric;
s: array[0..3] of string[10];
begin
with Table1.FieldDefs, Printer do
begin
Update;
PrinterIndex := -1;
Title := 'Структура ' + Table1.TableName;
BeginDoc;
nX := 0;
nY := 0;
WinProcs.GetTextMetrics(Canvas.Handle, rtxtMetric);
nHeight := rtxtMetric.tmHeight;
nWidth := rtxtMetric.tmAveCharWidth;
for i := 0 to Count - 1 do
begin
s[0] := IntToStr(Items[i].FieldNo) + #9;
s[1] := Items[i].Name + #9;
s[2] := FieldTypes[Ord(Items[i].DataType)] + #9;
s[3] := IntToStr(Items[i].Size);
Canvas.TextOut(nX, nY, s[0]);
Inc(nX, Length(s[0]) * nWidth);
Canvas.TextOut(nX, nY, s[1]);
Inc(nX, Length(s[1]) * nWidth);
Canvas.TextOut(nX, nY, s[2]);
Inc(nX, Length(s[2]) * nWidth);
Canvas.TextOut(nX, nY, s[3]);
nX := 0;
nY := i * nHeight;
end;
EndDoc;
end;
end;