Создание линейной диаграммы

    
#include <windows.h>
#include <string.h>
#include <fstream>
#include <stdio.h>
#include <iostream>
 
int numData;
int res;
FILE* pFile;
int str[1];
float * buffer;
float * buffer2;
int i[10]={365, 430, 495, 560, 625, 690,755, 820, 885, 950};
int j;
 
 
 
 
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
 
TCHAR szProgName[] = TEXT("LineDiag");
 
int WINAPI WinMain(HINSTANCE hCurrentInst, HINSTANCE hPreviousInst, LPSTR lpszCmdLine, int nCmdShow)
{
WNDCLASS wndClass;
HWND hWnd;
MSG message;
 
wndClass.lpszClassName = szProgName;
wndClass.hInstance = hCurrentInst;
wndClass.lpfnWndProc = WndProc;
wndClass.hCursor = LoadCursor(NULL, IDC_ARROW);
wndClass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
wndClass.lpszMenuName = 0;
wndClass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
wndClass.style = CS_HREDRAW | CS_VREDRAW;
wndClass.cbClsExtra = 0;
wndClass.cbWndExtra = 0;
 
if (!RegisterClass(&wndClass))
return 0;
 
hWnd = CreateWindow(
szProgName,
TEXT("LineDiag"),
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
NULL,
NULL,
hCurrentInst,
NULL
);
 
ShowWindow(hWnd, nCmdShow);
UpdateWindow(hWnd);
 
while (GetMessage(&message, NULL, 0, 0))
{
TranslateMessage(&message);
DispatchMessage(&message);
}
 
return message.wParam;
}
 
LRESULT CALLBACK WndProc(HWND hWnd, UINT nMessage, WPARAM wParam, LPARAM lParam)
{
HDC hDC;
PAINTSTRUCT ps;
RECT rc;
 
switch (nMessage)
{
case WM_PAINT:
hDC = BeginPaint(hWnd, &ps);
MoveToEx (hDC, 300, 650, NULL);
LineTo (hDC, 300, 100);
LineTo (hDC, 295, 115);
MoveToEx (hDC,300, 100, NULL);
LineTo (hDC,305, 115);
MoveToEx (hDC, 300, 650, NULL);
LineTo (hDC, 950, 650);
LineTo (hDC, 935, 645);
MoveToEx (hDC, 950, 650, NULL);
LineTo (hDC, 935, 655);
MoveToEx (hDC, 300, 650, NULL);
pFile = fopen ("input.txt","r");
for (int i=0; i<1000; i++)
{
res=fscanf(pFile,"%f %f",&str[10]);
if (res>0) numData++;
}
rewind (pFile);
buffer = (float*) malloc (sizeof(float)*numData);
buffer2 = (float*) malloc (sizeof(float)*numData);
for (int i=0; i<numData; i++)
{
fscanf(pFile,"%f %f", &buffer[i], &buffer2[i]);
}
for (int j=0; j<numData; j++)
{
    fscanf(pFile, "%f %f", &buffer[j], &buffer2[j]);
}
fclose (pFile);
//HPEN NewPen=CreatePen (PS_SOLID, 2, RGB(255,0,0)); 
//SelectObject
 
for (int j=0; j<numData; j++)
LineTo(hDC,   i[j], buffer[j]);
 
EndPaint(hWnd, &ps);
 
break;
 
case WM_DESTROY:
PostQuitMessage(0);
break;
 
default:
return DefWindowProc(hWnd, nMessage, wParam, lParam);
}
 
return 0;
}