Question

delphi中STRINGGRID的用法

for I := 1 to Screen.Fonts.Count do
begin
StringGrid1.Cells [I, 0] := Screen.Fonts.Strings [I-1];
StringGrid1.Canvas.Font.Name := StringGrid1.Cells [I, 0];
StringGrid1.Canvas.Font.Size := 32;
StringGrid1.ColWidths [I] :=
StringGrid1.Canvas.TextWidth (’AaBbYyZz’);
end;
能给解释下各句的意思吗??小弟万分感激``

Answer 1

StringGrid行列的增加和删除
type
TExCell = class(TStringGrid)
public
procedure DeleteRow(ARow: Longint);
procedure DeleteColumn(ACol: Longint);
procedure InsertRow(ARow: LongInt);
procedure InsertColumn(ACol: LongInt);
end;
procedure TExCell.InsertColumn(ACol: Integer);
begin
ColCount :=ColCount +1;
MoveColumn(ColCount-1, ACol);
end;
procedure TExCell.InsertRow(ARow: Integer);
begin
RowCount :=RowCount +1;
MoveRow(RowCount-1, ARow);
end;
procedure TExCell.DeleteColumn(ACol: Longint);
begin
MoveColumn(ACol, ColCount -1);
ColCount := ColCount - 1;
end;
procedure TExCell.DeleteRow(ARow: Longint);
begin
MoveRow(ARow, RowCount - 1);
RowCount := RowCount - 1;
end.

Answer 2

1，列举出系统所有的字体并显示在第一列
2，设置Canvas的字体名称跟该cell的内容相同
3,设置Canvas的字体大小
4，设置cell的宽度
5，设置Canvas的字宽

Answer 3

遍历可获取的字体，在表格的第一列，用该字体的样式，32号字体，显示字体的名称，并设置列的宽度