Mega Code Archive
Printing a DBGrid Contents with QuickReport
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Title: Printing a DBGrid Content's with QuickReport
Question: Almost always your the user of your application needs to print the records he/she is seeing by scrolling a DBGrid. And always he/she asks you to make a new report that display columns the way he/she thinks.
Now with this code you can provide a more flexible way to print a dataset's record set. Give to you user a DBGrid and let him/her play with it, make even methods to change the font type and colors, and then put this piece of code in a form that has a TQuickRep on it.
Answer:
First make a new form, name it as TGridReport and drop a TQuickRep on it.
Rename you QuickRep to GridRep. Then make a Preview that receives a DBGrid as parameter, just like this:
procedure TGridReport.Preview(Grid: TDBGrid);
var
i, CurrentLeft, CurrentTop : integer;
BMark: TBookmark;
begin
GridRep.Dataset:=Grid.DataSource.DataSet;
if not GridRep.Bands.HasColumnHeader then
GridRep.Bands.HasColumnHeader:=true;
if not GridRep.Bands.HasDetail then
GridRep.Bands.HasDetail:=true;
GridRep.Bands.ColumnHeaderBand.Height:=Abs(Grid.TitleFont.Height) + 10;
GridRep.Bands.DetailBand.Height:=Abs(Grid.Font.Height) + 10;
CurrentLeft := 12;
CurrentTop := 6;
{Record where the user stopped in the DBGrid}
BMark:=Grid.DataSource.DataSet.GetBookmark;
{Don't let the grid flicker while the report is running}
Grid.DataSource.DataSet.DisableControls;
try
for i:=0 to Grid.FieldCount - 1 do
begin
if (CurrentLeft + Canvas.TextWidth(Grid.Columns[i].Title.Caption))
(GridRep.Bands.ColumnHeaderBand.Width) then
begin
CurrentLeft := 12;
CurrentTop := CurrentTop + Canvas.TextHeight('A') + 6;
GridRep.Bands.ColumnHeaderBand.Height := GridRep.Bands.ColumnHeaderBand.Height +
(Canvas.TextHeight('A') + 10);
GridRep.Bands.DetailBand.Height := GridRep.Bands.DetailBand.Height +
(Canvas.TextHeight('A') + 10);
end;
{Create Header with QRLabels}
with TQRLabel.Create(GridRep.Bands.ColumnHeaderBand) do
begin
Parent := GridRep.Bands.ColumnHeaderBand;
Color := GridRep.Bands.ColumnHeaderBand.Color;
Left := CurrentLeft;
Top := CurrentTop;
Caption:=Grid.Columns[i].Title.Caption;
end;
{Create Detail with QRDBText}
with TQRDbText.Create(GridRep.Bands.DetailBand) do
begin
Parent := GridRep.Bands.DetailBand;
Color := GridRep.Bands.DetailBand.Color;
Left := CurrentLeft;
Top := CurrentTop;
Alignment:=Grid.Columns[i].Alignment;
AutoSize:=false;
AutoStretch:=true;
Width:=Grid.Columns[i].Width;
Dataset:=GridRep.Dataset;
DataField:=Grid.Fields[i].FieldName;
CurrentLeft:=CurrentLeft + (Grid.Columns[i].Width) + 15;
end;
end;
lblPage.Left := bdTitle.Width - lblPage.Width - 10;
lblDate.Left := bdTitle.Width - lblDate.Width - 10;
{After all, call the QuickRep preview method}
GridRep.PreviewModal; {or Preview if you prefer}
finally
with Grid.DataSource.DataSet do
begin
GotoBookmark(BMark);
FreeBookmark(BMark);
EnableControls;
end;
end;
end;
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