Lzp729@Blog

int cxChar, cxCaps, cyChar;
char szBuffer[50];
case WM_CREATE:
          hdc = GetDC (hwnd) ;
 
          GetTextMetrics (hdc, &tm) ;
          cxChar = tm.tmAveCharWidth ;
          cxCaps = (tm.tmPitchAndFamily & 1 ? 3 : 2) * cxChar / 2 ;
          cyChar = tm.tmHeight + tm.tmExternalLeading ;
 
          ReleaseDC (hwnd, hdc);
          return 0 ;
case WM_PAINT :
          hdc = BeginPaint (hwnd, &ps) ;
		  j = NUMLINES;
          for (i = 0 ; i < 3; i++)
          {
               TextOut (hdc, 0, cyChar * i, TEXT("NAME"), 4);
               TextOut (hdc, 22 * cxCaps, cyChar * i, TEXT("Description"), 11);
               SetTextAlign (hdc, TA_RIGHT | TA_TOP) ;
               TextOut (hdc, 22 * cxCaps + 40 * cxChar, cyChar * i, szBuffer, wsprintf (szBuffer, TEXT ("Value"))) ;
               SetTextAlign (hdc, TA_LEFT | TA_TOP) ;
          }
          EndPaint (hwnd, &ps) ;
          return 0 ;

#define LOWORD(l) ((WORD)(l))
#define HIWORD(l) ((WORD)(((DWORD)(l) >> 16) & 0XFFFF))

static int cxClinet, cyClient;
case WM_SIZE:
          cxClient = LOWORD(lParam);
          cyClient = HIWORD(lParam);
          return 0 ;

#define WINVER 0x0500
#define NUMLINES 75
 
#include <windows.h>
 
LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM);
 
int __stdcall WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
                    PSTR szCmdLine, int iCmdShow)
{
 
	static TCHAR szAppName[] = TEXT("SysMets");
	HWND hwnd;
	MSG msg;
 
	WNDCLASS wndclass;
	wndclass.style = CS_HREDRAW | CS_VREDRAW;
	wndclass.lpfnWndProc = WndProc;
	wndclass.cbClsExtra = 0;
	wndclass.cbWndExtra = 0;
	wndclass.hInstance = hInstance;
	wndclass.hIcon = LoadIcon(NULL,IDI_APPLICATION);
	wndclass.hCursor = LoadCursor(NULL,IDC_ARROW);
	wndclass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
	wndclass.lpszMenuName = NULL;
	wndclass.lpszClassName = TEXT("MainWindow");
 
	if (!RegisterClass(&wndclass))
	{
		MessageBox (NULL, TEXT("Program requires Windows NT"), szAppName, MB_ICONERROR);
		return 0;
	}
 
	hwnd = CreateWindow(TEXT("MainWindow"),szAppName,
		WS_OVERLAPPEDWINDOW | WS_VSCROLL | WS_HSCROLL,
		CW_USEDEFAULT, CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,
		NULL,NULL,hInstance,NULL);
 
	ShowWindow(hwnd,iCmdShow);
	UpdateWindow(hwnd);
 
	while(GetMessage(&msg,NULL,0,0))
	{
		TranslateMessage(&msg);
		DispatchMessage(&msg);
	}
 
	return msg.wParam;
};
 
LRESULT CALLBACK WndProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam)
{
	static UINT cxChar,cxCaps,cyChar,cxClients,cyClients,uiMaxWidth;
 
	HDC hdc;
	PAINTSTRUCT ps;
	SCROLLINFO si;
	TEXTMETRIC tm;
 
	int iVertPos, iHorzPos, iPaintBeg, iPaintEnd, i,x,y;
	TCHAR szBuffer[20];
 
	switch(message)
	{
	case WM_CREATE:
		hdc = GetDC(hwnd);
 
		ZeroMemory(&tm,sizeof tm);
		GetTextMetrics(hdc,&tm);
		cxChar = tm.tmAveCharWidth;
		cxCaps = (tm.tmPitchAndFamily & 1 ? 3 : 2) * cxChar / 2;
		cyChar = tm.tmHeight + tm.tmExternalLeading;
 
		ReleaseDC(hwnd,hdc);
 
		uiMaxWidth = 40 * cxChar + 22 * cxCaps;
 
		return 0;
 
	case WM_SIZE:
		cxClients = LOWORD(lParam);
		cyClients = HIWORD(lParam);
 
		ZeroMemory(&si,sizeof si);
		si.cbSize = sizeof si;
		si.fMask = SIF_RANGE | SIF_PAGE;
		si.nMin = 0;
		si.nMax = NUMLINES - 1;
		si.nPage = cyClients / cyChar;
		SetScrollInfo(hwnd,SB_VERT,&si,true);
 
		ZeroMemory(&si,sizeof si);
		si.cbSize = sizeof si;
		si.fMask = SIF_RANGE | SIF_PAGE;
		si.nMin = 0;
		si.nMax = uiMaxWidth / cxChar + 2;
		si.nPage = cxClients / cxChar;
		SetScrollInfo(hwnd,SB_HORZ,&si,true);
 
		return 0;
 
	case WM_VSCROLL:
 
		ZeroMemory(&si, sizeof si);
		si.cbSize = sizeof si;
		si.fMask = SIF_ALL;
		GetScrollInfo(hwnd,SB_VERT,&si);
 
		iVertPos = si.nPos;
		switch (LOWORD(wParam))
		{
		case SB_TOP:
			si.nPos = si.nMin;
			break;
		case SB_BOTTOM:
			si.nPos = si.nMax;
			break;
		case SB_LINEUP:
			si.nPos -= 1;
			break;
		case SB_LINEDOWN:
			si.nPos += 1;
			break;
		case SB_PAGEUP:
			si.nPos -= si.nPage;
			break;
		case SB_PAGEDOWN:
			si.nPos += si.nPage;
			break;
		case SB_THUMBTRACK:
			si.nPos = si.nTrackPos;
			break;
 
		default:
			break;
		}
 
		si.fMask = SIF_POS;
		SetScrollInfo(hwnd,SB_VERT,&si,true);
		GetScrollInfo(hwnd,SB_VERT,&si);
 
		if (si.nPos != iVertPos)
		{
			ScrollWindow(hwnd,0,cyChar * (iVertPos - si.nPos), NULL,NULL);
			UpdateWindow(hwnd);
		}
 
		return 0;
 
	case WM_HSCROLL:
		ZeroMemory(&si, sizeof si);
		si.cbSize = sizeof si;
		si.fMask = SIF_ALL;
		GetScrollInfo(hwnd,SB_HORZ,&si);
 
		iHorzPos = si.nPos;
		switch (LOWORD(wParam))
		{
		case SB_TOP:
			si.nPos = si.nMin;
			break;
		case SB_BOTTOM:
			si.nPos = si.nMax;
			break;
		case SB_LINEUP:
			si.nPos -= 1;
			break;
		case SB_LINEDOWN:
			si.nPos += 1;
			break;
		case SB_PAGEUP:
			si.nPos -= si.nPage;
			break;
		case SB_PAGEDOWN:
			si.nPos += si.nPage;
			break;
		case SB_THUMBTRACK:
			si.nPos = si.nTrackPos;
			break;
 
		default:
			break;
		}
 
		si.fMask = SIF_POS;
		SetScrollInfo(hwnd,SB_HORZ,&si,true);
		GetScrollInfo(hwnd,SB_HORZ,&si);
 
		if (si.nPos != iHorzPos)
		{
			ScrollWindow(hwnd,cxChar * (iHorzPos - si.nPos),0, NULL,NULL);
			UpdateWindow(hwnd);
		}
 
		return 0;
	case WM_PAINT:
		hdc = BeginPaint(hwnd,&ps);
 
		ZeroMemory(&si,sizeof si);
 
		si.fMask = SIF_POS;
		GetScrollInfo(hwnd,SB_VERT,&si);
		iVertPos = si.nPos;
 
		si.fMask = SIF_POS;
		GetScrollInfo(hwnd,SB_HORZ,&si);
		iHorzPos = si.nPos;
 
		iPaintBeg = max (0, iVertPos + ps.rcPaint.top / cyChar) ;
		iPaintEnd = min (NUMLINES - 1,
					iVertPos + ps.rcPaint.bottom / cyChar) ;
 
		for (i = iPaintBeg ; i <= iPaintEnd ; i++)
		{
			x = cxChar * (1 - iHorzPos) ;
			y = cyChar * (i - iVertPos) ;
 
			TextOut (hdc, x, y,
					szBuffer,wsprintf (szBuffer, TEXT ("Name%d"),i)) ;
 
			TextOut (hdc, x + 22 * cxCaps, y,
					szBuffer,wsprintf (szBuffer, TEXT ("Description%d"),i)) ;
 
			SetTextAlign (hdc, TA_RIGHT | TA_TOP) ;
 
			TextOut (hdc, x + 22 * cxCaps + 40 * cxChar, y,
				szBuffer,wsprintf (szBuffer, TEXT ("Value%d"),i)) ;
 
			SetTextAlign (hdc, TA_LEFT | TA_TOP) ;
		}
 
		EndPaint(hwnd,&ps);
		return 0;
	case WM_DESTROY:
		PostQuitMessage(0);
		return 0;
	}
	return DefWindowProc(hwnd,message,wParam,lParam);
}