[WinAPI] 편집 스크롤(Edit Scroll) 방법

첨에 찾은게 아래 방식이여서 이방식을 계속사용하다가

case WM_CREATE : 
        // Get the handle to the client area's device context. 
        hdc = GetDC (hWnd); 
 
        // Extract font dimensions from the text metrics. 
        GetTextMetrics (hdc, &tm); 
        xChar = tm.tmAveCharWidth; 
        xUpper = (tm.tmPitchAndFamily & 1 ? 3 : 2) * xChar/2; 
        yChar = tm.tmHeight + tm.tmExternalLeading; 
 
        // Free the device context. 
        ReleaseDC (hWnd, hdc); 
 
        // Set an arbitrary maximum width for client area. 
        // (xClientMax is the sum of the widths of 48 average 
        // lowercase letters and 12 uppercase letters.) 
        xClientMax = 48 * xChar + 12 * xUpper; 
 
        return 0;

  case WM_SIZE: 
 
        // Retrieve the dimensions of the client area. 
        yClient = HIWORD (lParam); 
        xClient = LOWORD (lParam); 
 
        // Set the vertical scrolling range and page size
        si.cbSize = sizeof(si); 
        si.fMask  = SIF_RANGE | SIF_PAGE; 
        si.nMin   = 0; 
        si.nMax   = LINES - 1; 
        si.nPage  = yClient / yChar; 
        SetScrollInfo(hWnd, SB_VERT, &si, TRUE); 
 
        // Set the horizontal scrolling range and page size. 
        si.cbSize = sizeof(si); 
        si.fMask  = SIF_RANGE | SIF_PAGE; 
        si.nMin   = 0; 
        si.nMax   = 2 + xClientMax / xChar; 
        si.nPage  = xClient / xChar; 
        SetScrollInfo(hWnd, SB_HORZ, &si, TRUE);            
        return 0;

case WM_VSCROLL:
         // Get all the vertical scroll bar information
         si.cbSize = sizeof (si);
         si.fMask  = SIF_ALL;
         GetScrollInfo (hWnd, SB_VERT, &si);
         // Save the position for comparison later on
         yPos = si.nPos;
         switch (LOWORD (wParam))
         {
         // user clicked the HOME keyboard key
         case SB_TOP:
             si.nPos = si.nMin;
             break;
              
         // user clicked the END keyboard key
         case SB_BOTTOM:
             si.nPos = si.nMax;
             break;
              
         // user clicked the top arrow
         case SB_LINEUP:
             si.nPos -= 1;
             break;
              
         // user clicked the bottom arrow
         case SB_LINEDOWN:
             si.nPos += 1;
             break;
              
         // user clicked the scroll bar shaft above the scroll box
         case SB_PAGEUP:
             si.nPos -= si.nPage;
             break;
              
         // user clicked the scroll bar shaft below the scroll box
         case SB_PAGEDOWN:
             si.nPos += si.nPage;
             break;
              
         // user dragged the scroll box
         case SB_THUMBTRACK:
             si.nPos = si.nTrackPos;
             break;

         // user positioned the scroll box
         // This message is the one used by Windows Touch
         case SB_THUMBPOSITION:
             si.nPos = HIWORD(wParam);
             break;
                            
         default:
              break; 
         }
         // Set the position and then retrieve it.  Due to adjustments
         //   by Windows it may not be the same as the value set.
         si.fMask = SIF_POS;
         SetScrollInfo (hWnd, SB_VERT, &si, TRUE);
         GetScrollInfo (hWnd, SB_VERT, &si);
         // If the position has changed, scroll window and update it
         if (si.nPos != yPos)
         {                    
          ScrollWindow(hWnd, 0, yChar * (yPos - si.nPos), NULL, NULL);
          UpdateWindow (hWnd);
         }
         break;
         
         case WM_PAINT:
         // Prepare the window for painting
         hdc = BeginPaint (hWnd, &ps);
         // Get vertical scroll bar position
         si.cbSize = sizeof (si);
         si.fMask  = SIF_POS;
         GetScrollInfo (hWnd, SB_VERT, &si);
         yPos = si.nPos;
         // Get horizontal scroll bar position
         GetScrollInfo (hWnd, SB_HORZ, &si);
         xPos = si.nPos;
         // Find painting limits
         FirstLine = max (0, yPos + ps.rcPaint.top / yChar);
         LastLine = min (LINES - 1, yPos + ps.rcPaint.bottom / yChar);
         
         
         
         for (i = FirstLine; i <= LastLine; i++)         
         {
              x = xChar * (1 - xPos);
              y = yChar * (i - yPos);
              
              // Note that "55" in the following depends on the 
              // maximum size of an abc[] item.
              //
              abcLength = wcslen(abc[i]);
              hr = S_OK;
              if ((FAILED(hr)))
              {
                 MessageBox(hWnd, L"err", L"err", NULL);
              }else{
                  TextOut(hdc, x, y, abc[i], abcLength);
              }
              
         }
         // Indicate that painting is finished
         EndPaint (hWnd, &ps);
         return 0;

개쩌는 코드를 찾아냈는데 이게 일방적인 코드인거 같아서.. 조금 만 더 찾아볼걸

그냥 CreateWindow함수에 ES_AUTOHSCOLL 상수랑 ES_AUTOVSCROLL 상수를 or 연산으로 해주면 되는걸 ...

자세한 내용은 아래 링크로

https://docs.microsoft.com/ko-kr/previous-versions/6e36b89f(v=vs.120)