MFC开发常用知识点总结

开辟空间

cmd_zone=newchar[CMD_LENGH];//指令空间

data_zone=newchar[DATA_LENGH];//数据空间

ax=newchar[4];

bx=newchar[4];

cx=newchar[4];

sp=newchar[SP_LENGH];//堆栈空间

pc=newchar[4];

memset(cmd_zone,0,CMD_LENGH);//设置大小

memset(data_zone,0,DATA_LENGH);

memset(ax,0,4);

memset(bx,0,4);

memset(cx,0,4);

memset(sp,0,SP_LENGH);

memset(pc,0,4);

srand((unsignedint)(time(0)));//随机数起始

分配地址（16位：2，2，4，4，4）

cmd_code=*((unsignedshort*)cmd_zone);

cmd_nouse=*((unsignedshort*)cmd_zone+2);

cmd_arg1=*(unsignedint *)(cmd_zone+4);

cmd_arg2=*(unsignedint *)(cmd_zone+8);

cmd_arg3=*(unsignedint*)(cmd_zone+12);

输出数据（EDITCONTROL）

CString bbb;

bbb.Format(_T("%d %d %d %d %d"),X,X,X,X,X);

UpdateData(true);

myedit += bbb + _T("\r\n");

UpdateData(false);

动态创建按钮

static CButton *btn =new CButton();

btn->Create(_T("aaa"),WS_CHILD|WS_VISIBLE,CRect(10,50,100,100),this,1); //（按钮的文字，Dword，对角线顶点坐标，父窗口，号码）

CMFCButton * button = new CMFCButton;

button->Create(_T("Test Button"),

WS_VISIBLE,

CRect(5, 5, 80, 50),

this,

IDC_BUTTON_TEST);

// 更改文字

button->SetWindowTextA(_T("强制更改"));

// 更改背景颜色

button->SetFaceColor(RGB(153, 217, 234));

// 更改字体颜色

button->SetTextColor(RGB(255, 255, 255));

// 更改高亮颜色

button->SetTextHotColor(RGB(63, 72, 204));

// 更改位置

button->MoveWindow(50, 50, 100, 70);

// 鼠标经过时变成手势

button->SetMouseCursorHand();

// 工具提示

button->SetTooltip(_T("俺是提示"));

button1->SetImage(IDB_BITMAP1);

向数据空间写数据

for (int i=0;i

{

cmd_code=*(unsignedshort*)(cmd_zone+0+16*i)=rand()%10;

cmd_nouse=*(unsignedshort*)(cmd_zone+2+16*i)=rand()%10;

cmd_arg1=*(unsignedint*)(cmd_zone+4+16*i)=rand()%10;

cmd_arg2=*(unsignedint*)(cmd_zone+8+16*i)=rand()%10;

cmd_arg3=*(unsignedint*)(cmd_zone+12+16*i)=rand()%10;

｝

Comob 控件

mycomb1.AddString(“aaa”);

mycomb1.GetLBText(mycomb1.GetCurSel(),bbb); //获取控件指示的内容（如：add，sub，div等）mycomb1.GetCurSel() //获取控件指示的第N个数，返回值为（0，1，2…）

定时器

SetTimer(1,1000,NULL);//定时器1，1000ms间隔，NULL

显示菜单程序：

放在oninit()函数下

HMENU m_hMenu1;

m_hMenu1=LoadMenu(AfxGetInstanceHandle(),MAKEINTRESOURCE(IDR_MENU1));//导入资源,创建菜单

::SetMenu(this->GetSafeHwnd(),m_hMenu1);//添加到对话框

判断数据库是否存在，不存在就还原备份

CFile abc;

if (!abc.Open(_T(".\\test1.mdb"),CFile::modeRead))

{

CopyFile(_T(".\\test1.bak"),_T(".\\test1.mdb"),TRUE);

}

Edit control控件跟踪最后一行显示方法，放在updatedata（false）之后

m_editcontrol.LineScroll(m_editcontrol.GetLineCount());

设置进度条

m_ctrl.SetRange(0,100); //设置起始和结束范围

m_ctrl.SetPos(100); //设置当前位置

打开帮助文档

::WinExec("HH.EXE .\\help.chm",SW_SHOW);

获取clistbox内容

CString str;

m_lstMaterials.GetText(m_lstMaterials.GetCurSEL,str);

CString componentname=str;

CString aaa;

aaa.Format(_T("%s"),componentname);

AfxMessageBox(aaa);

显示图片

void CDlgComponents::OpenBMP()

{

CFile picFile;

if(picFile.Open(BmpName, CFile::modeRead | CFile::typeBinary)) {

BYTE* pBuffer = new BYTE[(unsignedint)picFile.GetLength()];

if(pBuffer != NULL)

{

picFile.Read(pBuffer, (UINT)picFile.GetLength());

//Load the Image

m_picCtrl.Load(pBuffer, (size_t)picFile.GetLength());

delete pBuffer;

}

}

}

获取路径

void CDlgComponents::GetBMPName()

{

POSITION pos = m_Components.GetFirstSelectedItemPosition();

int iSel = m_Components.GetNextSelectedItem(pos);

CString strSel = m_Components.GetItemText(iSel, 0); //获取到组件名称CString comid;

int len;

len=strSel.GetLength();

int i;

i=strSel.Find(" ");

comid=strSel.Mid(i+5,len);

BmpName=".//piclib/"+comid+".bmp";

}