datashowchild.cpp

操作系统知识

//---------------------------------------------------------------------------

#include <vcl.h>
#pragma hdrstop

#include "DataShowChild.h"
#include "CommFun.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TFormDataShowChild *FormDataShowChild;
//---------------------------------------------------------------------------
__fastcall TFormDataShowChild::TFormDataShowChild(TComponent* Owner,char ctype)
        : TForm(Owner)
{
type=ctype;
switch( ctype )
 {
 case 'U':
          Caption="上部温度曲线";
          break;
 case 'D':
          Caption="下部温度曲线";
          break;
 case 'A':
          Caption="平均温度曲线";
          break;
 case 'P':
          Caption="压力曲线";
          break;
 }
}
//---------------------------------------------------------------------------
void __fastcall TFormDataShowChild::FormCreate(TObject *Sender)
{
WindowProc=MyWndProc;
}
//---------------------------------------------------------------------------
void __fastcall TFormDataShowChild::FormClose(TObject *Sender,
      TCloseAction &Action)
{
Action=caFree;
}
//---------------------------------------------------------------------------
void __fastcall TFormDataShowChild::InitCanvas(char ctype,TCanvas *Canvas,
                short & DevWidth,short & DevHeight)
{
switch (ctype)
  {
  case 'U':
            Canvas->Pen->Color=clRed;
            if (x1>=DevWidth )  x1=0;
            if (y1>=DevHeight)  y1=0;
            break;
  case 'D':
            Canvas->Pen->Color=clGreen;
            if (x2>=DevWidth )  x2=0;
            if (y2>=DevHeight)  y2=0;
            break;
  case 'A':
            Canvas->Pen->Color=clBlue;
            if (x3>=DevWidth )  x3=0;
            if (y3>=DevHeight)  y3=0;
            break;
  case 'P':
            Canvas->Pen->Color=clBlack;
            if (x4>=DevWidth )  x4=0;
            if (y4>=DevHeight)  y4=0;
            break;
  }
}
//---------------------------------------------------------------------------
void __fastcall TFormDataShowChild::DrawCanvas(char ctype,TCanvas * Canvas,
                bool printer)
{
switch (ctype)
  {
  case 'U':
            Canvas->MoveTo(x1,y1);
            Canvas->LineTo(x1+5,y1+5);
            break;
  case 'D':
            Canvas->MoveTo(x2,y2);
            Canvas->LineTo(x2+5,y2+5);
            break;
  case 'A':
            Canvas->MoveTo(x3,y3);
            Canvas->LineTo(x3+5,y3+5);
            break;
  case 'P':
            Canvas->MoveTo(x4,y4);
            Canvas->LineTo(x4+5,y4+5);
            break;
  }
}
//---------------------------------------------------------------------------
void __fastcall TFormDataShowChild::MyWndProc(Messages::TMessage &Message)
{
 if  (Message.Msg == WM_USER+10)
  {
    InitCanvas(type,Image->Canvas,ClientWidth,ClientHeight);
    DrawCanvas(type,Image->Canvas,false);
  }
 WndProc(Message);
}
//---------------------------------------------------------------------------