delphi7 string grid输入行和列如何置中
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StringGrid组件用于建立显示字符串的网格,与电子表格相似。它可使表格中的字符串和相关对象操作简单化。StringGrid组件提供了许多可控制网格外观念的属性,以及利用表格的结构响应用户操作的事件和方法。StringGrid具有关联对象与网格中的每个字符串的作用,这些对象为用户封装了字符串表示的信息或行为。
一、Delphi StringGrid控件的属性及使用说明
1、固定行及固定列: (没有固定行列的时候,不能在运行时调节各个单元格的宽度和高度)
StringGrid.FixedCols := 固定行数;
StringGrid.FixedRows := 固定列数;
StringGrid.FixedColor := 固定行列的颜色;
StringGrid.Color := 未固定行列的颜色(资料区);
2、资料区行列的宽度和高度:
StringGrid.DefaultColWidth := 内定全部的宽度;
StringGrid.DefaultRowHeight := 内定全部的高度;
StringGrid.ColWidths[Index:Longint]:=某一行整行的宽度;
StringGrid.RowHeights[Index:Longint]:=某一列整列之高度;
3、资料区(CELL)指定(将某一行列停在资料区最左上角)
StringGrid.LeftCol:=某一行号;
StringGrid.TopRow:=某一列号;
4、焦点移动到某一单元格内:
StringGrid.Row:=?;
StringGrid.Col:=?;
5、设定资料区行数和列数:(包含固定行、列亦算在内)
StringGrid.RowCount:=?;
StringGrid.ColCount:=?;
6、给某一个单元格赋值(从0开始):
StringGrid.Cells[Col值 , Row值]:=字串;
7、判断鼠标处于哪一个单元格中
在StringGrid的Mouse事件中(UP,DOWN或MOVE)下:
VAR C , R : Longint;
StringGrid.MouseToCell(X,Y,C,R); {X,Y由MOUSE事件传入}
{取回 C , R 即为目前之Col , Row值 }
8、StringGrid之Options属性:
若要在执行中开启合租关闭Options某一功能如 ‘goTABS’,则可以如下:
开启: StringGrid.Options:= StringGrid.Options + [goTABS];
关闭: StringGrid.Options:= StringGrid.Options - [goTABS];
goFixedHorzLine 固定列之间的水平分割线
goFixedVertLine 固定行之间的垂直分割线
goHorzLine 可滚动列之间的水平分割线
goVertLine 可滚动行之间的垂直分割线
goRangeSelect 可多重选择单元,如果包含goEditing,则忽略goRangeSelect。
goDrawFocusSelected 用鼠标多重选择时,第一个选择的单元反白
goRowSizing 用鼠标可改变列高
goColSizing 用鼠标可改变行宽
goRowMoving 用鼠标可移动可滚动行
goColMoving 用鼠标可移动可滚动列
goEditing 可编辑单元的内容
goAlwaysShowEditor 表格总是编辑模式,不需要F2或ENTER即有等待输入的游标。如果Options不包含goEditing或包含goRowSelect,则goAlwaysShowEditor无效。
goTabs 用TAB及Shift+TAB可切换表格单元
goRowSelect 用滑鼠点一下可选取整列(亦与滑鼠可多重选择互斥)
goThumbTracking 卷轴动时GRID跟著动,否则卷轴动完放开,GRID才动
一、Delphi StringGrid控件的常用操作代码
// 初始化StirngGrid的首行和首列
procedure TReferContentForm.SetSGridTitle(SGrid: TSuiStringGrid);
var
ColIndex, RowIndex: integer;
begin
//画第一行(标题栏)
for colIndex := 1 to SGrid.ColCount do
begin
SGrid.Cells[colIndex, 0] := '列名' + Chr(ord('A') - 1 + colIndex);
end;
//画第一列(数字栏)
SGrid.ColWidths[0] := 30;
SGrid.Cells[0, 0] := '序列';
for RowIndex := 1 to SGrid.RowCount - 1 do
begin
SGrid.Cells[0, RowIndex] := IntToStr(RowIndex);
end;
end;
// 清楚StirngGrid,指定行数和列数
procedure TReferContentForm.ClearSGrid(SGrid: TSuiStringGrid; aRow, aCol: integer);
var
i: integer;
begin
SGrid.RowCount := aRow;
SGrid.ColCount := aCol;
for i := 0 to SGrid.RowCount - 1 do //如果不清表头则从1开始
SGrid.Rows[i].Clear;
setSGridTitle(SGrid);
end;
// 添加一行
procedure TReferContentForm.mmiN1Click(Sender: TObject);
var
SGrid: TsuiStringGrid;
begin
SGrid := TsuiStringGrid(suiPMSGrid.PopupComponent);
if SGrid <> nil then
begin
SGrid.RowCount := SGrid.RowCount + 1;
SetSGridTitle(SGrid);
end;
end;
// 插入一行
procedure TReferContentForm.mmiN2Click(Sender: TObject);
var
i, curRow: integer;
SGrid: TsuiStringGrid;
begin
SGrid := TsuiStringGrid(suiPMSGrid.PopupComponent);
if SGrid <> nil then
begin
curRow := SGrid.Row; //记录当前选定行的位置
SGrid.rowcount := SGrid.rowcount + 1;
for i := SGrid.rowcount - 1 downto curRow + 1 do
SGrid.Rows[i] := SGrid.Rows[i - 1];
SGrid.Rows[curRow].Clear;
SetSGridTitle(SGrid);
end;
end;
// 删除当前一行
procedure TReferContentForm.mmiN3Click(Sender: TObject);
var
i: integer;
SGrid: TsuiStringGrid;
begin
SGrid := TsuiStringGrid(suiPMSGrid.PopupComponent);
if SGrid <> nil then
begin
for i := SGrid.row to SGrid.RowCount - 1 do
SGrid.Rows[i] := SGrid.Rows[i + 1];
SGrid.RowCount := SGrid.RowCount - 1; //删除
SetSGridTitle(SGrid);
end;
end;
// 添加一列
procedure TReferContentForm.mmiN5Click(Sender: TObject);
var
SGrid: TsuiStringGrid;
begin
SGrid := TsuiStringGrid(suiPMSGrid.PopupComponent);
if SGrid <> nil then
SGrid.ColCount := SGrid.ColCount + 1;
SetSGridTitle(SGrid);
end;
// 插入一列
procedure TReferContentForm.mmiN6Click(Sender: TObject);
var
i, CurCol: integer;
SGrid: TsuiStringGrid;
begin
SGrid := TsuiStringGrid(suiPMSGrid.PopupComponent);
if SGrid <> nil then
begin
CurCol := SGrid.Col; //记录当前选定行的位置
SGrid.ColCount := SGrid.ColCount + 1;
for i := SGrid.ColCount - 1 downto CurCol + 1 do
SGrid.Cols[i] := SGrid.Cols[i - 1];
SGrid.Cols[CurCol].Clear;
end;
SetSGridTitle(SGrid);
end;
// 删除一列
procedure TReferContentForm.mmiN7Click(Sender: TObject);
var
i: integer;
SGrid: TsuiStringGrid;
begin
SGrid := TsuiStringGrid(suiPMSGrid.PopupComponent);
if SGrid <> nil then
begin
for i := SGrid.Col to SGrid.ColCount - 1 do
SGrid.Cols[i] := SGrid.Cols[i + 1];
SGrid.ColCount := SGrid.ColCount - 1; //删除
end;
SetSGridTitle(SGrid);
end;
// 清空
procedure TReferContentForm.mmiN9Click(Sender: TObject);
var
SGrid: TsuiStringGrid;
begin
SGrid := TsuiStringGrid(suiPMSGrid.PopupComponent);
if SGrid <> nil then
begin
ClearSGrid(SGrid, 5, 5)
end;
SetSGridTitle(SGrid);
end;
// 右击选择单元格
procedure TReferContentForm.suiStringGridContentMouseDown(Sender: TObject;
Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
begin
if (Button = mbRight) then
begin
SendMessage(SGridContent.Handle, WM_LBUTTONDOWN, 0, MAKELONG(x, y));
SendMessage(SGridContent.Handle, WM_LBUTTONUP, 0, MAKELONG(x, y));
end;
end;
procedure TReferContentForm.FormShow(Sender: TObject);
begin
SetSGridTitle(SGridContent);
end;
// 把标题栏和数字列中是内容,居中显现
procedure TReferContentForm.SGridContentDrawCell(Sender: TObject; ACol,
ARow: Integer; Rect: TRect; State: TGridDrawState);
var
s: string;
r: TRect;
begin
if (ACol = 0) or (ARow = 0) then
begin
with TSuiStringGrid(Sender) do
begin
Canvas.Brush.Color := $00F0DDCE;
Canvas.FillRect(Rect);
s := Cells[ACol, ARow];
r := Rect;
DrawText(Canvas.Handle, PChar(s), Length(s), r, DT_CENTER or DT_SINGLELINE or DT_VCENTER);
end
end
end;
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