ssms.cpp

一个学生成绩管理程序适合初学VC

  
	OPENFILENAME OpenFileName;
	char szDirName[MAX_PATH]="";
	char szFile[MAX_PATH]="\0";
	char szFileTitle[MAX_PATH]="\0";

	char szFilter[]={"所有文件\0*.*\0文本文件(*.txt)\0*.txt\0C源程序(*.c)\0*.c"};
	OpenFileName.lStructSize=sizeof(OPENFILENAME);
	OpenFileName.hwndOwner =hWnd;
	OpenFileName.hInstance =hInst;
	OpenFileName.lpstrFilter =szFilter;
	OpenFileName.lpstrCustomFilter= (LPTSTR)NULL;
	OpenFileName.nMaxCustFilter =0L;
	OpenFileName.nFilterIndex =1L;
	OpenFileName.lpstrFile =szFile;
	OpenFileName.nMaxFile=sizeof(szFile);
	OpenFileName.lpstrFileTitle =szFileTitle;
	OpenFileName.nMaxFileTitle =sizeof(szFileTitle);
	OpenFileName.lpstrInitialDir =NULL;
	OpenFileName.lpstrTitle ="请选择取一个文本文件";
	OpenFileName.nFileExtension =0;
	OpenFileName.nFileOffset =0;
	OpenFileName.lpstrDefExt ="*.*";//txt";
	OpenFileName.lCustData =0;
	OpenFileName.Flags =OFN_PATHMUSTEXIST|OFN_FILEMUSTEXIST|OFN_HIDEREADONLY;
	if(GetOpenFileName(&OpenFileName))
	{
		bOpen=1;
		strcpy(strFileName,OpenFileName.lpstrFile);
		head=load(strFileName);
/*	
		HANDLE hFile;
		DWORD dwFileSize,dwBytesRead,dwFileSize1;
		hFile=CreateFile(
			OpenFileName.lpstrFile,
			GENERIC_READ,
			FILE_SHARE_READ,
			NULL,
			OPEN_EXISTING,
			FILE_ATTRIBUTE_NORMAL,
			(HANDLE)NULL);
		if(hFile!=INVALID_HANDLE_VALUE)
		{

			dwFileSize=GetFileSize(hFile,NULL);
			if(dwFileSize!=0xFFFFFFFF)
			{
				 struct student temp;
				dwFileSize1=sizeof(struct student);

				while(dwFileSize>=0)
				{
	    //           dwFileSize=sizeof(struct student);

					ReadFile(hFile,(LPVOID)&temp,dwFileSize1,&dwBytesRead,NULL);
    	//          WriteFile(hFile,(LPVOID)&temp,dwFileSize,&dwBytesWrite,NULL); 

					if(dwBytesRead!=0)
					{
					   p=(STU *)malloc(sizeof(STU));
				       p->num=temp.num;
				       p->score[0]=temp.score[0];
			           p->score[1]=temp.score[1];
					   p->score[2]=temp.score[2];
					   p->aver=temp.aver;
					   strcpy(p->name,temp.name);
					   p->next=NULL;
					   if(head==NULL)head=q=p;
					   else {q->next=p;q=p;}
					}
					else 
					{
						MessageBox(NULL,"读字节为0","出错",MB_OK);
						break;
					}
 					dwFileSize-=dwFileSize;
				}
			}
			else MessageBox(NULL,"检取文件大小失败","出错",MB_OK);
			*/
		}
		else MessageBox(NULL,"打开文件失败","出错",MB_OK);
	
	return head;
}

// Mesage handler for about box.
LRESULT CALLBACK ScoreApp(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
	long lNum;
	char strName[20];
	int iScore[3];
	char strNum[10],strMath[10],strEng[10],strComp[10];
	switch (message)
	{
		case WM_INITDIALOG:
				return TRUE;

		case WM_COMMAND:
			switch(LOWORD(wParam))
			{
			case IDOK:
	
				GetDlgItemText(hDlg,IDC_NUM,strNum,9);
				GetDlgItemText(hDlg,IDC_NAME,strName,19);
				GetDlgItemText(hDlg,IDC_MATH,strMath,9);
				GetDlgItemText(hDlg,IDC_ENG,strEng,9);
				GetDlgItemText(hDlg,IDC_COMP,strComp,9);
				lNum=atol(strNum);
				iScore[0]=atoi(strMath);
				iScore[1]=atoi(strEng);
				iScore[2]=atoi(strComp);

				head=insert(head,lNum,strName,iScore);
				EndDialog(hDlg, LOWORD(wParam));
				return TRUE;
		//	case IDC_ENG:
		//	case IDC_MATH:


	
				break;
			}
			break;
	}
    return FALSE;
}

STU *insert(STU *head,long num,char name[],int score[3])
{ STU *new1,*p,*q;
  int j;
  /*输入数据生成一个新结点*/
  new1=(STU *)malloc(sizeof(STU));
  strcpy(new1->name,name);
  new1->num=num;
  new1->aver=0;
  for(j=0;j<3;j++){
    new1->score[j]=score[j];
    new1->aver+=new1->score[j];
  }
  new1->aver/=3;
  /*新结点按照学号从小到大插入链表*/
  p=head;
  if(head==NULL){  /*链表是空链表*/
    head=new1;
    new1->next=NULL;
  }
  else { /*寻找插入位置*/
    while((p->next!=NULL)&&(p->num!=new1->num)){ q=p;p=p->next; }
    if(p->num>new1->num){
      if(head==p){ new1->next=head;head=new1; }
      else { q->next=new1;new1->next=p;  }
    }
    else {
       p->next=new1;
       new1->next=NULL;
    }
  }
  return(head);
}



//*       函数：saveTextFile (HWND, HWND)
//*       用途：调用公共对话框函数，显示"另存为"对话框,由用户选择
//*                        文本名,然后把编辑控件中的内容保存到该文件中.
void SaveTextFile(HWND hWnd)//, HWND hWndEdit )
{

	if(!bOpen)
	{
		OPENFILENAME OpenFileName; 
		char szDirName[MAX_PATH]="";
		char szFile[MAX_PATH]="\0";
		char szFileTitle[MAX_PATH]="\0";
		char szFilter[]={"All Files\0*.*\0"};
		OpenFileName.lStructSize=sizeof(OPENFILENAME);
		OpenFileName.hwndOwner=hWnd; 
		OpenFileName.hInstance=hInst; 
		OpenFileName.lpstrFilter=szFilter; 
		OpenFileName.lpstrCustomFilter=(LPTSTR)NULL;
		OpenFileName.nMaxCustFilter=0L;
		OpenFileName.nFilterIndex=1L;
		OpenFileName.lpstrFile=szFile; 
		OpenFileName.nMaxFile=sizeof(szFile);
		OpenFileName.lpstrFileTitle=szFileTitle; 
		OpenFileName.nMaxFileTitle=sizeof(szFileTitle);
		OpenFileName.lpstrInitialDir=NULL; 
		OpenFileName.lpstrTitle="另存为";
		OpenFileName.nFileOffset=0; 
		OpenFileName.nFileExtension=0; 
		OpenFileName.lpstrDefExt=NULL; 
		OpenFileName.lCustData=0;
		OpenFileName.Flags=OFN_OVERWRITEPROMPT; 
		if (GetSaveFileName (&OpenFileName))
		{	strcpy(strFileName,OpenFileName.lpstrFile);
		}
		else return ;
	}
	
	HANDLE hFile; 
	DWORD  dwFileSize,dwBytesWrite; 
	//创建文件。（如果已经有了同名文件，则覆盖该文件）。
	hFile=CreateFile
		(
			strFileName,
			GENERIC_READ|GENERIC_WRITE,
			0,
			NULL,
			CREATE_ALWAYS,
			FILE_ATTRIBUTE_NORMAL,
			(HANDLE)NULL);
     if(hFile!=INVALID_HANDLE_VALUE)
     {
		 STU *p=head;
		 struct student temp;
		 while(p)
		 {		//检取编辑控件内容的字节大小。
               dwFileSize=sizeof(struct student);
               // 分配文件缓冲区。 
			  temp.num=p->num;
			  temp.score[0]=p->score[0];
			  temp.score[1]=p->score[1];
			  temp.score[2]=p->score[2];
			  temp.aver=p->aver ;
			  strcpy(temp.name,p->name );
               // 把编辑控件中的内容装到文件缓冲区。 
               //把文件缓冲区中的数据存写到文件中。 
              WriteFile(hFile,(LPVOID)&temp,dwFileSize,&dwBytesWrite,NULL); 
			  if(!dwBytesWrite)
				{
					MessageBox(NULL,"写入文件出错","出错",MB_OK);
					break;
				}

				p=p->next;
		 }
         SetWindowText(hWnd,strFileName);
	     CloseHandle(hFile);
	 	bSave=1;	

	  }
	  else 
          MessageBox(hWnd,"创建文件失败！",NULL,MB_OK|MB_ICONEXCLAMATION);
    return ;
}
LRESULT CALLBACK ScoreFindNum(HWND  hDlg, UINT message, WPARAM wParam,LPARAM lParam)
{
//	char strName[20];
//	int iScore[3];//
//	char strNum[10];//,strMath[10],strEng[10],strComp[10];
	switch (message)
	{
		case WM_INITDIALOG:
			SetWindowText(hDlg,strFindModi);
			return TRUE;

		case WM_COMMAND:
			switch(LOWORD(wParam))
			{
			case IDOK:
				GetDlgItemText(hDlg,IDC_FIND_NUM,strFind,10);
				EndDialog(hDlg, LOWORD(wParam));
				return TRUE;
		//	case IDC_ENG:
		//	case IDC_MATH:

				break;
			}
			break;
	}
    return FALSE;
}

LRESULT CALLBACK ScoreFindName(HWND  hDlg, UINT message, WPARAM wParam,LPARAM lParam)
{
//	char strName[20];
//	int iScore[3];
	switch (message)
	{
		case WM_INITDIALOG:
			SetWindowText(hDlg,strFindModi);
			return TRUE;

		case WM_COMMAND:
			switch(LOWORD(wParam))
			{
			case IDOK:
				GetDlgItemText(hDlg,IDC_FIND_NAME,strFind,10);
				EndDialog(hDlg, LOWORD(wParam));
				return TRUE;
		//	case IDC_ENG:
		//	case IDC_MATH:

				break;
			}
			break;
	}
    return FALSE;
}
LRESULT CALLBACK ScoreModi(HWND  hDlg, UINT message, WPARAM wParam,LPARAM lParam)
{
	//long lNum;
//	int iSo
	char strNum[10],strMath[10],strEng[10],strComp[10];
	switch (message)
	{
		case WM_INITDIALOG:
			_itoa(stP->num, strNum, 10);
			_itoa(stP->score[0],strMath, 10);
			_itoa(stP->score[1], strEng, 10);
			_itoa(stP->score[2], strComp, 10);
			SetDlgItemText(hDlg,IDC_NUM,strNum);
			SetDlgItemText(hDlg,IDC_NAME,stP->name);
			SetDlgItemText(hDlg,IDC_MATH,strMath);
			SetDlgItemText(hDlg,IDC_ENG,strEng);
			SetDlgItemText(hDlg,IDC_COMP,strComp);
				return TRUE;

		case WM_COMMAND:
			switch(LOWORD(wParam))
			{
			case IDOK:
	
				GetDlgItemText(hDlg,IDC_NUM,strNum,9);
				GetDlgItemText(hDlg,IDC_NAME,stP->name,19);
				GetDlgItemText(hDlg,IDC_MATH,strMath,9);
				GetDlgItemText(hDlg,IDC_ENG,strEng,9);
				GetDlgItemText(hDlg,IDC_COMP,strComp,9);
				stP->num=atol(strNum);
				stP->score[0]=atoi(strMath);
				stP->score[1]=atoi(strEng);
				stP->score[2]=atoi(strComp);
				//strcpy(stP->name,strName);
				stP->aver =(float)(stP->score[0]+stP->score[1]+stP->score[2])/3.0;
				EndDialog(hDlg, LOWORD(wParam));
		//	case IDC_ENG:
		//	case IDC_MATH:


	
				break;
			}
			break;
	}
    return FALSE;
}
void ShowRecord(HDC hdc,HWND hWnd,STU *head,int ShowMode,char strFind[20])
{
//	static char szFormat[]=;
	cxChar=0;
	cyChar=5;
	static char szTop[]="学号   姓名   数学   英语  计算机  平均";
	char strNotFind[]="没有该学生的记录！";
//	char strPz[10];
	char szBuffer[180];//,strNum[8],strMath[5],strEng[5],strComp[5];
	STU *p=head;
	if(ShowMode==0)
	{
		if(head==NULL)
		{
			cxChar=0;
			cyChar+=20;
 			TextOut(hdc,cxChar,cyChar," ",strlen(" "));
			return ;
		}
		TextOut(hdc,cxChar,cyChar/2,szTop,(sizeof szTop)-1);
		while(p!=NULL)
		{
			cxChar=0;
			cyChar+=20;
 			TextOut(hdc,cxChar,cyChar,szBuffer,
				sprintf(szBuffer,"%-6d %-7s %-6d %-6d %-6d %-8.1f",p->num,p->name,p->score[0],p->score[1],p->score[2],p->aver));
		//	MessageBox(NULL,szBuffer,"输出出错",MB_OK);
			p=p->next;
		}
	}
	if(iShowMode==1)
	{
		int bFind=0;
		long lNum;
		lNum=atol(strFind);
		TextOut(hdc,cxChar,cyChar/2,szTop,(sizeof szTop)-1);

		while(p!=NULL)
		{
			if(p->num==lNum)
			{   bFind=1;
				cxChar=0;
				cyChar+=20;
 				TextOut(hdc,cxChar,cyChar,szBuffer,
					sprintf(szBuffer,"%-6d %-7s %-6d %-6d %-6d %-8.1f",p->num,p->name,p->score[0],p->score[1],p->score[2],p->aver));
			}
			p=p->next;
		}
		if(!bFind)
		{
			cxChar=0;
			cyChar+=20;
 			TextOut(hdc,cxChar,cyChar,strNotFind,strlen(strNotFind));
		}
	}

	if(iShowMode==2)
	{
		int bFind=0;
		TextOut(hdc,cxChar,cyChar/2,szTop,(sizeof szTop)-1);

		while(p!=NULL)
		{
			if(!strcmp(p->name,strFind))
			{   bFind=1;
				cxChar=0;
				cyChar+=20;
 				TextOut(hdc,cxChar,cyChar,szBuffer,
					sprintf(szBuffer,"%-6d %-7s %-6d %-6d %-6d %-8.1f",p->num,p->name,p->score[0],p->score[1],p->score[2],p->aver));
			}
			p=p->next;
		}
		if(!bFind)
		{
			cxChar=0;
			cyChar+=20;
 			TextOut(hdc,cxChar,cyChar,strNotFind,strlen(strNotFind));
		}
	}
	return ;
}