如何在Combox中进行多项选择

[XTMENG]

比如 combox有三项内容，分别是A，B，C，想实现多次选择，当第一次选择时，combox.text:='A'，第二选择时，combox.text:='A'+'B'
依次类推，如何实现？？？

[babydog01]

你要安装devexpress 控件组，不能只安装ExpressQuantumGrid4.5。

[oosmile]

在ComBox中添加Checkbox
add flat checkboxes into a TComboBox and multiselect?
Author: Chrizz
0 Comments to this tip [Write new comment]
[ Print tip ]

Tip Rating (0):




//Set ComboBox.Style:=csOwnerDrawFixed
//tested with D6 and WinXP...

//.....
private
Selected: array of Boolean;
//.....


procedure TTForm1.ComboBox1DrawItem(Control: TWinControl;
Index: Integer; Rect: TRect; State: TOwnerDrawState);
begin
SetLength(Selected, TComboBox(Control).Items.Count);
with TComboBox(Control).Canvas do
begin
FillRect(rect);

Rect.Left := Rect.Left + 1;
Rect.Right := Rect.Left + 13;
Rect.Bottom := Rect.Bottom;
Rect.Top := Rect.Top;

if not (odSelected in State) and (Selected[Index]) then
DrawFrameControl(Handle, Rect, DFC_BUTTON,
DFCS_BUTTONCHECK or DFCS_CHECKED or DFCS_FLAT)
else if (odFocused in State) and (Selected[Index]) then
DrawFrameControl(Handle, Rect, DFC_BUTTON,
DFCS_BUTTONCHECK or DFCS_CHECKED or DFCS_FLAT)
else if (Selected[Index]) then
DrawFrameControl(Handle, Rect, DFC_BUTTON,
DFCS_BUTTONCHECK or DFCS_CHECKED or DFCS_FLAT)
else if not (Selected[Index]) then
DrawFrameControl(Handle, Rect, DFC_BUTTON, DFCS_BUTTONCHECK or DFCS_FLAT);

TextOut(Rect.Left + 15, Rect.Top, TComboBox(Control).Items[Index]);
end;
end;

procedure TForm1.ComboBox1Select(Sender: TObject);
var
i: Integer;
Sel: string;
begin
Sel := EmptyStr;
Selected[TComboBox(Sender).ItemIndex] := not Selected[TComboBox(Sender).ItemIndex];
for i := 0 to TComboBox(Sender).Items.Count - 1 do
if Selected[i] then
Sel := Sel + TComboBox(Sender).Items[i] + ' ';
ShowMessage(Sel); //Just for test...
end;

[dinoalex]

TcxCheckComboBox

[山东蓝鸟贵薪]

学习学习中..........................

[XTMENG]

请问dinoalex：我装ExpressQuantumGrid4.5版本，发现没有
TcxCheckComboBox这个控件啊，到底是哪个版本有呢？？？