小知识点总结三

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1 加载资源位图

1 获取程序实例

HINSTANCE m_hInst;

m_hInst=AfxGetInstanceHandle(); //获取程序实例

2 加载图像

HBITMAP m_bmpTank；

HBITMAP m_bmpBomb;

m_bmpTank=LoadBitmap(m_hInst,MAKEINTRESOURCE(IDB_TANK));

m_bmpBomb=LoadBitmap(m_hInst,MAKEINTRESOURCE(IDB_BOMB));

3 将位图选入DC中

HDC m_TankDC;

HDC m_BombDC;

m_TankDC=CreateCompatibleDC(pDC->m_hDC);

m_BombDC=CreateCompatibleDC(pDC->m_hDC);

//选择图像

SelectObject(m_TankDC,m_bmpTank);

SelectObject(m_BombDC,m_bmpBomb);

4 画图

BitBlt(pTankDC->m_hDC,0,0,TANK_WIDTH,TANK_WIDTH,m_TankDC,0,0,SRCCOPY);

TransparentBlt2(pDC->m_hDC,0,0,nWidth,nHeight,

m_TankDC, 0,0,nWidth,nHeight,RGB(255,0,0));

2 移动Pictutr控件

1 获得Picture的DC

CDC* m_pMapDC=GetDlgItem(IDC_MAP)->GetDC();

CDC* m_pTankDC=GetDlgItem(IDC_TANK)->GetDC();

2 将Picture控件移到指定矩形区域

//设置客户区矩形

m_ClientRect[0]=CRect(20,10,7*WIDTH+20,WIDTH+10); //IDC_MAP

m_ClientRect[1]=CRect(20,50,NUM*WIDTH+20,NUM*WIDTH+50); //IDC_FIELD

m_ClientRect[2]=CRect(260,12,TANK_WIDTH+260,TANK_WIDTH+12); //IDC_TNAK

//移动窗口

GetDlgItem(IDC_MAP)->MoveWindow(m_ClientRect[0]); //IDC_MAP

GetDlgItem(IDC_FIELD)->MoveWindow(m_ClientRect[1]); //IDC_FIELD

GetDlgItem(IDC_TANK)->MoveWindow(m_ClientRect[2]);

3 加载光标

1 加载光标

1）从文件加载光标

HCURSOR m_hCursor;

//Load the Cursor

m_hCursor=LoadCursorFromFile("res\\cursor.ani"); //.cur or .ani

2）从程序自定义的资源光标加载

m_hCursor=AfxGetApp()->LoadCursor(IDR_CURSOR);

3）从默认资源加载

m_hCursor=LoadCursor(NULL,IDC_CROSS);

2 设置光标

响应WM_SETCURSOR消息，显示适当的光标形状

if(m_hCursor)

{

SetCursor(m_hCursor);

return TRUE;

}

else

return CDialog::OnSetCursor(pWnd, nHitTest, message);

4 播放背景音乐

构造函数：

m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);

初始化：

HICON icon=LoadIcon(AfxGetInstanceHandle(),(LPCTSTR)IDR_MAINFRAME);

SetIcon(icon,TRUE);

SetIcon(icon,FALSE);

MCI_OPEN_PARMS mciOpen;

//背景音乐

mciOpen.lpstrDeviceType=0;

mciOpen.lpstrElementName="./res/music.mp3";

mciSendCommand(NULL,MCI_OPEN, MCI_OPEN_ELEMENT,(DWORD)&mciOpen);

MCI_PLAY_PARMS mciPlay;

mciPlay.dwFrom = 0;

mciSendCommand(mciOpen.wDeviceID,MCI_PLAY,MCI_NOTIFY | MCI_FROM,(DWORD)&mciPlay);

SetTimer(1,210000,NULL); //用来循环播放背景音乐

OnTimer函数：

OnTimer(UINT nIDEvent)

{

// TODO: 在此添加消息处理程序代码和/或调用默认值
if(nIDEvent==1)
{
      MCI_PLAY_PARMS mciPlay;
      mciPlay.dwFrom = 0;
      mciSendCommand(mciOpen.wDeviceID,MCI_PLAY,MCI_NOTIFY | MCI_FROM,(DWORD)&mciPlay);
}
CDialog::OnTimer(nIDEvent);

}

控制背景音乐的播放：

void CMazeDlg::OnBnClickedBkmusic()

{

// TODO: 在此添加控件通知处理程序代码

UpdateData(TRUE);
if(m_bBkMusic)
{
     MCI_PLAY_PARMS mciPlay;
     mciPlay.dwFrom = 0;
     mciSendCommand(mciOpen.wDeviceID,MCI_PLAY,MCI_NOTIFY | MCI_FROM,(DWORD)&mciPlay);
     SetTimer(1,210000,NULL);
}
else
{
     KillTimer(1);
     mciSendCommand(mciOpen.wDeviceID,MCI_STOP,MCI_WAIT,NULL);
}

}

5 线程操作

CWinThread *m_Thread;

UINT Start(LPVOID pPar); //开始

m_Thread=AfxBeginThread(Start,GetSafeHwnd());

m_Thread->SuspendThread();