本文代码简单实现了类似CnPack中的一个界面效果，利用TListBox的自画。
/Article/UploadFiles/200601/20060103023924211.gif?http://www.xvna.com
//---------------------------------------------------------------------------
// ListBox自画的另一种效果
// by ccrun(老妖)
// info ccrun.com
//---------------------------------------------------------------------------
#include <vcl.h>
#pragma hdrstop
#include "Unit1.h"
#include "Unit2.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TMainForm *MainForm;
//---------------------------------------------------------------------------
__fastcall TMainForm::TMainForm(TComponent* Owner)
: TForm(Owner)
{
// ListBox的风格，要自画必须选lbOwnerDrawFixed和lbOwnerDrawVariable
lbxMain->Style = lbOwnerDrawFixed;
// 去掉ListBox的边框,可有可无
lbxMain->Ctl3D = false;
// ListBox的每一项的高度
lbxMain->ItemHeight = 50;
pStrList = new TStringList;
// 往ListBox中添加些数据
for(int i=0; i<10; i++)
{
lbxMain->Items->Add("ListBox Items of " + String(i));
pStrList->Add("Second of " + String(i) + String((char)0x03) + "Third of " + String(i));
}
}
//---------------------------------------------------------------------------
void __fastcall TMainForm::lbxMainDrawItem(TWinControl *Control, int Index,
TRect &Rect, TOwnerDrawState State)
{
// 填充的背景颜色
lbxMain->Canvas->Brush->Color = clWhite;
// 文字颜色
lbxMain->Canvas->Font->Color = clBlack;
// 填充背景
lbxMain->Canvas->FillRect (Rect) ;
// 圆角矩形的背景颜色
lbxMain->Canvas->Brush->Color = TColor(0x00FFF7F7);
// 圆角矩形的边框颜色
lbxMain->Canvas->Pen->Color = TColor(0x00131315);
// 画出圆角矩形
lbxMain->Canvas->RoundRect(Rect.Left + 3, Rect.Top + 3,
Rect.Right - 2, Rect.Bottom - 2, 8, 8);
// 以不同的宽度和高度再画一次，实现立体效果
lbxMain->Canvas->RoundRect(Rect.Left + 3, Rect.Top + 3,
Rect.Right - 3, Rect.Bottom - 3, 5, 5);
// 如果是当前选中项
if(State.Contains(odSelected))
{
// 选中项的背景颜色
lbxMain->Canvas->Brush->Color = TColor(0x00FFB2B5);
// 以不同的背景色画出选中项的圆角矩形
lbxMain->Canvas->RoundRect(Rect.Left + 3, Rect.Top + 3,
Rect.Right - 3, Rect.Bottom - 3, 5, 5);
// 选中项的文字颜色
lbxMain->Canvas->Font->Color = clBlue;
// 如果当前项拥有焦点
if(State.Contains(odFocused))
// 重画焦点虚框，实际上就是擦除了原先的焦点虚框
// 我看到CnPack的设置中好象没有去除那个框. ccrun注
::DrawFocusRect(lbxMain->Canvas->Handle, &Rect);
}
// 画出图标
ImageList1->Draw(lbxMain->Canvas, Rect.Left + 7,
Rect.top + (lbxMain->ItemHeight - ImageList1->Height)/2, Index, true);
// Item的第一行文字
lbxMain->Canvas->TextOutA(Rect.Left + 32 + 10, Rect.Top + 4,
lbxMain->Items->Strings[Index]);
String strTemp = pStrList->Strings[Index];
// Item的第二行文字
lbxMain->Canvas->TextOutA(Rect.Left + 32 + 10, Rect.Top + 18,
strTemp.SubString(1, strTemp.Pos((char)0x03) - 1).c_str());
// Item的第三行文字
lbxMain->Canvas->TextOutA(Rect.Left + 32 + 10, Rect.Top + 32,
strTemp.SubString(strTemp.Pos((char)0x03) + 1, strTemp.Length()).c_str());
}