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Unit1.cpp
Package: C++Builder.rar [view]
Upload User: lhxd_sz
Upload Date: 2014-10-02
Package Size: 38814k
Code Size: 2k
Category:
Visual C++ Books
Development Platform:
C++ Builder
- //---------------------------------------------------------------------------
- #include <vcl.h>
- #pragma hdrstop
- #include "Unit1.h"
- //---------------------------------------------------------------------------
- #pragma package(smart_init)
- #pragma resource "*.dfm"
- TForm1 *Form1;
- //---------------------------------------------------------------------------
- __fastcall TForm1::TForm1(TComponent* Owner)
- : TForm(Owner)
- {
- }
- //---------------------------------------------------------------------------
- void __fastcall TForm1::ListBox1DrawItem(TWinControl *Control, int Index,
- TRect &Rect, TOwnerDrawState State)
- {
- Graphics::TBitmap *pBitmap; //定义一个位图
- int Offset = 2; //说明文字显示位置值
- TCanvas *pCanvas = ((TListBox *)Control)->Canvas;//列表框的画布
- pCanvas->FillRect(Rect); // 清除画布的内容
- pBitmap = (Graphics::TBitmap *)((TListBox *)Control)->Items->Objects[Index];//取出位图
- if (pBitmap) //如果位图存在,显示在列表项的左边
- {
- pCanvas->CopyRect(Bounds(Rect.Left + Offset, Rect.Top, pBitmap->Width, pBitmap->Height), pBitmap->Canvas,Bounds(0, 0, pBitmap->Width, pBitmap->Height));
- Offset += pBitmap->Width + 4; //准备说明文字显示的X位置
- }
- //显示说明文字
- pCanvas->TextOut(Rect.Left + Offset, Rect.Top+6,((TListBox *)Control)->Items->Strings[Index]);
- }
- //---------------------------------------------------------------------------
- void __fastcall TForm1::Button1Click(TObject *Sender)
- {
- ListBox1->Clear(); //列表框内容清空
- ListBox1->Items->AddObject("第一项",Image1->Picture->Bitmap);//加入行的内容
- ListBox1->Items->AddObject("第二项",Image2->Picture->Bitmap);
- ListBox1->Items->AddObject("第三项",Image3->Picture->Bitmap);
- ListBox1->Items->AddObject("第四项",Image4->Picture->Bitmap);
- }
- //---------------------------------------------------------------------------