源代码:http://download.csdn.net/detail/nuptboyzhb/4219669
源代码:
1. 插入一个对话框的资源,删除默认控件,并为对话框创建一个类,命名为ClyricDlg;
2. 在对话框的头文件中添加GDI+相关的头文件和动态库
#define UNICODE
#ifndef ULONG_PTR
#define ULONG_PTR unsigned long*
#endif
#include "GDIPlus\Includes\GdiPlus.h" ////Modify your path
using namespace Gdiplus;
#pragma comment(lib, "GDIPlus\Lib\gdiplus.lib") //Modify your lib path
3. 新增公有成员变量:
int m_kind;
int cx;
BOOL UpdateDisplay(int Transparent=255);
HINSTANCE hFuncInst ;
typedef BOOL (WINAPI *MYFUNC)(HWND,HDC,
POINT*,SIZE*,HDC,POINT*,COLORREF,BLENDFUNCTION*,DWORD);
MYFUNC UpdateLayeredWindow;
BLENDFUNCTION m_Blend;
HDC m_hdcMemory;
4. 新增私有成员变量:
BOOL m_bBack;
GdiplusStartupInput gdiplusStartupInput;
ULONG_PTR gdiplusToken;
5. 在构造函数中初始化如下成员变量:
m_bBack=false;
m_kind=cx=0;
GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, NULL);
6. 为对话框添加OnCreate函数,并编辑代码如下:
hFuncInst = LoadLibrary("User32.DLL");
BOOL bRet=FALSE;
if(hFuncInst)
UpdateLayeredWindow=(MYFUNC)GetProcAddress(hFuncInst, "UpdateLayeredWindow");
else
{
AfxMessageBox("User32.dll ERROR!");
exit(0);
}
// Initialize GDI+.
m_Blend.BlendOp=0; //theonlyBlendOpdefinedinWindows2000
m_Blend.BlendFlags=0; //nothingelseisspecial...
m_Blend.AlphaFormat=1; //...
m_Blend.SourceConstantAlpha=255;//AC_SRC_ALPHA
7. 实现其成员函数UpdataDisplay
- BOOL CLyricDlg::UpdateDisplay(int Transparent)
- {
- //获得DC,创建兼容DC
- HDC hdcTemp=GetDC()->m_hDC;
- m_hdcMemory=CreateCompatibleDC(hdcTemp);
- HBITMAP hBitMap=CreateCompatibleBitmap(hdcTemp,755,350);
- SelectObject(m_hdcMemory,hBitMap);
- //设置透明度最大值为100
- if(Transparent<0||Transparent>100) Transparent=100;
- //将透明度参数,传递给BLENDFUNCTION;
- m_Blend.SourceConstantAlpha=int(Transparent*2.55);//1~255
- RECT rct;
- //获取窗口的屏幕位置
- GetWindowRect(&rct);
- //窗口左上角的坐标
- POINT ptWinPos={rct.left,rct.top};
- //创建2个兼容DC的画笔,Graphics类在GDI+中定义
- Graphics graph(m_hdcMemory);
- Graphics graphics(m_hdcMemory);
- //设置平滑模式
- graphics.SetSmoothingMode(SmoothingModeAntiAlias);
- graphics.SetInterpolationMode(InterpolationModeHighQualityBicubic);
- //设置字体,FontFamily也在GDI+中定义
- FontFamily fontFamily(L"Arial Black");
- StringFormat strformat;
- //获取系统时间
- CTime time=CTime::GetCurrentTime();
- CString timestr=time.Format("%H-%M-%M");
- wchar_t pszbuf[][80]={{L"http://blog.csdn.net/nuptboyzhb"},
- {L"南京邮电大学郑海波"},
- {L"I wish you will lead a happy life!"},
- {L"zhb931706659@126.com"},
- {L"NUPT"}
- };
- //创建一个画笔的路径
- GraphicsPath path;
- path.AddString(pszbuf[m_kind],wcslen(pszbuf[m_kind]),&fontFamily,
- FontStyleRegular,38,Point(10,10),&strformat);
- //创建一支画笔
- Pen pen(Color(155,215,215,215),3);
- //画笔画出已经创建的路径
- graphics.DrawPath(&pen,&path);
- /*画出字体的边缘部分*/
- for(int i=1; i<9; i+=1)
- {
- Pen pen(Color(62, 0, 2, 2),(float)i);
- pen.SetLineJoin(LineJoinRound);
- graphics.DrawPath(&pen, &path);
- }
- SolidBrush brush(Color(25,228,228,228));
- Pen pen1(Color(155,223,223,223));
- Pen pen2(Color(55,223,223,223));
- Image image(L"1.png");
- if(m_bBack)//画背景和图片
- {
- graphics.FillRectangle(&brush,3,5,750,90);
- graphics.DrawRectangle(&pen1,2,6,751,91);
- graphics.DrawRectangle(&pen2,1,5,753,93);
- graphics.DrawImage(&image,600,5);
- }
- //创建线性渐变画刷
- LinearGradientBrush linGrBrush(
- Point(0,0),Point(0,90),
- Color(255,255,255,255),
- Color(255,30,120,195));
- LinearGradientBrush linGrBrushW(
- Point(0,10),Point(0,60),
- Color(255,255,255,255),
- Color(15,1,1,1));
- //用线性渐变画刷填充路径
- graphics.FillPath(&linGrBrush,&path);
- graphics.FillPath(&linGrBrushW,&path);
- //设置窗口的风格
- DWORD dwExStyle=GetWindowLong(m_hWnd,GWL_EXSTYLE);
- if((dwExStyle&0x80000)!=0x80000)
- SetWindowLong(m_hWnd,GWL_EXSTYLE,dwExStyle^0x80000);
- //更新窗口层
- SIZE sizeWindow={755,350};
- POINT ptSrc={0,0};
- BOOL bRet=FALSE;
- HDC hdcScreen=::GetDC (m_hWnd);
- //UpdateLayeredWindow功能是更新一个窗口的位置、大小、形状、内容和透明度
- bRet= UpdateLayeredWindow( m_hWnd,hdcScreen,&ptWinPos,
- &sizeWindow,m_hdcMemory,&ptSrc,0,&m_Blend,2);
- graph.ReleaseHDC(m_hdcMemory);
- ::ReleaseDC(m_hWnd,hdcScreen);
- hdcScreen=NULL;
- ::ReleaseDC(m_hWnd,hdcTemp);
- hdcTemp=NULL;
- DeleteObject(hBitMap);
- DeleteDC(m_hdcMemory);
- m_hdcMemory=NULL;
- return bRet;
- }
8. 添加OnTimer(UINT nIDEvent)消息响应函数,编辑代码如下:
cx+=1;
if(cx>20)
{
m_kind++;
m_bBack=false;
UpdateDisplay();
cx=0;
}
if(m_kind>3)
m_kind=0;
9. 编辑OnInitDialog()函数
// TODO: Add extra initialization here
UpdateDisplay();
SetTimer(1,50,NULL);