MFC用GDI+动感歌词的制作

时间：2021-08-04 06:51:20

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

  1. BOOL CLyricDlg::UpdateDisplay(int Transparent)
  2. {
  3. //获得DC，创建兼容DC
  4. HDC hdcTemp=GetDC()->m_hDC;
  5. m_hdcMemory=CreateCompatibleDC(hdcTemp);
  6. HBITMAP hBitMap=CreateCompatibleBitmap(hdcTemp,755,350);
  7. SelectObject(m_hdcMemory,hBitMap);
  8. //设置透明度最大值为100
  9. if(Transparent<0||Transparent>100)      Transparent=100;
  10. //将透明度参数，传递给BLENDFUNCTION；
  11. m_Blend.SourceConstantAlpha=int(Transparent*2.55);//1~255
  12. RECT rct;
  13. //获取窗口的屏幕位置
  14. GetWindowRect(&rct);
  15. //窗口左上角的坐标
  16. POINT ptWinPos={rct.left,rct.top};
  17. //创建2个兼容DC的画笔，Graphics类在GDI+中定义
  18. Graphics graph(m_hdcMemory);
  19. Graphics graphics(m_hdcMemory);
  20. //设置平滑模式
  21. graphics.SetSmoothingMode(SmoothingModeAntiAlias);
  22. graphics.SetInterpolationMode(InterpolationModeHighQualityBicubic);
  23. //设置字体，FontFamily也在GDI+中定义
  24. FontFamily fontFamily(L"Arial Black");
  25. StringFormat strformat;
  26. //获取系统时间
  27. CTime time=CTime::GetCurrentTime();
  28. CString timestr=time.Format("%H-%M-%M");
  29. wchar_t pszbuf[][80]={{L"http://blog.csdn.net/nuptboyzhb"},
  30. {L"南京邮电大学郑海波"},
  31. {L"I wish you will lead a  happy life!"},
  32. {L"zhb931706659@126.com"},
  33. {L"NUPT"}
  34. };
  35. //创建一个画笔的路径
  36. GraphicsPath path;
  37. path.AddString(pszbuf[m_kind],wcslen(pszbuf[m_kind]),&fontFamily,
  38. FontStyleRegular,38,Point(10,10),&strformat);
  39. //创建一支画笔
  40. Pen pen(Color(155,215,215,215),3);
  41. //画笔画出已经创建的路径
  42. graphics.DrawPath(&pen,&path);
  43. /*画出字体的边缘部分*/
  44. for(int i=1; i<9; i+=1)
  45. {
  46. Pen pen(Color(62, 0, 2, 2),(float)i);
  47. pen.SetLineJoin(LineJoinRound);
  48. graphics.DrawPath(&pen, &path);
  49. }
  50. SolidBrush brush(Color(25,228,228,228));
  51. Pen pen1(Color(155,223,223,223));
  52. Pen pen2(Color(55,223,223,223));
  53. Image image(L"1.png");
  54. if(m_bBack)//画背景和图片
  55. {
  56. graphics.FillRectangle(&brush,3,5,750,90);
  57. graphics.DrawRectangle(&pen1,2,6,751,91);
  58. graphics.DrawRectangle(&pen2,1,5,753,93);
  59. graphics.DrawImage(&image,600,5);
  60. }
  61. //创建线性渐变画刷
  62. LinearGradientBrush linGrBrush(
  63. Point(0,0),Point(0,90),
  64. Color(255,255,255,255),
  65. Color(255,30,120,195));
  66. LinearGradientBrush linGrBrushW(
  67. Point(0,10),Point(0,60),
  68. Color(255,255,255,255),
  69. Color(15,1,1,1));
  70. //用线性渐变画刷填充路径
  71. graphics.FillPath(&linGrBrush,&path);
  72. graphics.FillPath(&linGrBrushW,&path);
  73. //设置窗口的风格
  74. DWORD dwExStyle=GetWindowLong(m_hWnd,GWL_EXSTYLE);
  75. if((dwExStyle&0x80000)!=0x80000)
  76. SetWindowLong(m_hWnd,GWL_EXSTYLE,dwExStyle^0x80000);
  77. //更新窗口层
  78. SIZE sizeWindow={755,350};
  79. POINT ptSrc={0,0};
  80. BOOL bRet=FALSE;
  81. HDC hdcScreen=::GetDC (m_hWnd);
  82. //UpdateLayeredWindow功能是更新一个窗口的位置、大小、形状、内容和透明度
  83. bRet= UpdateLayeredWindow( m_hWnd,hdcScreen,&ptWinPos,
  84. &sizeWindow,m_hdcMemory,&ptSrc,0,&m_Blend,2);
  85. graph.ReleaseHDC(m_hdcMemory);
  86. ::ReleaseDC(m_hWnd,hdcScreen);
  87. hdcScreen=NULL;
  88. ::ReleaseDC(m_hWnd,hdcTemp);
  89. hdcTemp=NULL;
  90. DeleteObject(hBitMap);
  91. DeleteDC(m_hdcMemory);
  92. m_hdcMemory=NULL;
  93. return bRet;
  94. }

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);

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