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안녕하세요. heredity입니다.
return CallWindowProc(OldScroll[id], hwnd, message, wParam, lParam);
를
return CallWindowProc((FARPROC)OldScroll[id], hwnd, message, wParam, lParam);
로 바꿔 보세요.
자세한 것은 CallWindowProc()에 대한 도움말을 확인하세요.
행복하세요.
손동섭 님이 쓰신 글 :
: 찰스 페졸드의 API소스를 입력하여 컴파일 하면 에러가 발생합니다.
: 헬프에서 찾아봐도 맞게 호출된 것 같은데...
: min(), max()매크로 함수도 없다고 에러가 발생해서 제가 직접 입력하였습니다.
:
: C++Builder6의 버그인가요??? 아무래도 버그이겠지요... 그렇다면 해결방법은 없나요...
: -->> 맨 아래부분에서 에러가 발생합니다.
:
: #include <windows.h>
: #include <stdlib.h>
:
: //#define min(a, b) (((a) < (b)) ? (a) : (b))
: //#define max(a, b) (((a) > (b)) ? (a) : (b))
:
:
: LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;
: LRESULT CALLBACK ScrollProc (HWND, UINT, WPARAM, LPARAM) ;
:
: int idFocus ;
: WNDPROC OldScroll[3] ;
:
: int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
: PSTR szCmdLine, int iCmdShow)
: {
: static TCHAR szAppName[] = TEXT ("Colors1") ;
: 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 = CreateSolidBrush (0) ;
: wndclass.lpszMenuName = NULL ;
: wndclass.lpszClassName = szAppName ;
:
: if (!RegisterClass (&wndclass))
: {
: MessageBox (NULL, TEXT ("This program requires Windows NT!"),
: szAppName, MB_ICONERROR) ;
: return 0 ;
: }
:
: hwnd = CreateWindow (szAppName, TEXT ("Color Scroll"),
: WS_OVERLAPPEDWINDOW,
: 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 COLORREF crPrim[3] = { RGB (255, 0, 0), RGB (0, 255, 0),
: RGB (0, 0, 255) } ;
: static HBRUSH hBrush[3], hBrushStatic ;
: static HWND hwndScroll[3], hwndLabel[3], hwndValue[3], hwndRect ;
: static int color[3], cyChar ;
: static RECT rcColor ;
: static TCHAR * szColorLabel[] = { TEXT ("Red"), TEXT ("Green"),
: TEXT ("Blue") } ;
: HINSTANCE hInstance ;
: int i, cxClient, cyClient ;
: TCHAR szBuffer[10] ;
:
: switch (message)
: {
: case WM_CREATE :
: hInstance = (HINSTANCE) GetWindowLong (hwnd, GWL_HINSTANCE) ;
:
: // Create the white-rectangle window against which the
: // scroll bars will be positioned. The child window ID is 9.
:
: hwndRect = CreateWindow (TEXT ("static"), NULL,
: WS_CHILD | WS_VISIBLE | SS_WHITERECT,
: 0, 0, 0, 0,
: hwnd, (HMENU) 9, hInstance, NULL) ;
:
: for (i = 0 ; i < 3 ; i++)
: {
: // The three scroll bars have IDs 0, 1, and 2, with
: // scroll bar ranges from 0 through 255.
:
: hwndScroll[i] = CreateWindow (TEXT ("scrollbar"), NULL,
: WS_CHILD | WS_VISIBLE |
: WS_TABSTOP | SBS_VERT,
: 0, 0, 0, 0,
: hwnd, (HMENU) i, hInstance, NULL) ;
:
: SetScrollRange (hwndScroll[i], SB_CTL, 0, 255, FALSE) ;
: SetScrollPos (hwndScroll[i], SB_CTL, 0, FALSE) ;
:
: // The three color-name labels have IDs 3, 4, and 5,
: // and text strings "Red", "Green", and "Blue".
:
: hwndLabel [i] = CreateWindow (TEXT ("static"), szColorLabel[i],
: WS_CHILD | WS_VISIBLE | SS_CENTER,
: 0, 0, 0, 0,
: hwnd, (HMENU) (i + 3),
: hInstance, NULL) ;
:
: // The three color-value text fields have IDs 6, 7,
: // and 8, and initial text strings of "0".
:
: hwndValue [i] = CreateWindow (TEXT ("static"), TEXT ("0"),
: WS_CHILD | WS_VISIBLE | SS_CENTER,
: 0, 0, 0, 0,
: hwnd, (HMENU) (i + 6),
: hInstance, NULL) ;
:
: OldScroll[i] = (WNDPROC) SetWindowLong (hwndScroll[i],
: GWL_WNDPROC, (LONG) ScrollProc) ;
:
: hBrush[i] = CreateSolidBrush (crPrim[i]) ;
: }
:
: hBrushStatic = CreateSolidBrush (
: GetSysColor (COLOR_BTNHIGHLIGHT)) ;
:
: cyChar = HIWORD (GetDialogBaseUnits ()) ;
: return 0 ;
:
: case WM_SIZE :
: cxClient = LOWORD (lParam) ;
: cyClient = HIWORD (lParam) ;
:
: SetRect (&rcColor, cxClient / 2, 0, cxClient, cyClient) ;
:
: MoveWindow (hwndRect, 0, 0, cxClient / 2, cyClient, TRUE) ;
:
: for (i = 0 ; i < 3 ; i++)
: {
: MoveWindow (hwndScroll[i],
: (2 * i + 1) * cxClient / 14, 2 * cyChar,
: cxClient / 14, cyClient - 4 * cyChar, TRUE) ;
:
: MoveWindow (hwndLabel[i],
: (4 * i + 1) * cxClient / 28, cyChar / 2,
: cxClient / 7, cyChar, TRUE) ;
:
: MoveWindow (hwndValue[i],
: (4 * i + 1) * cxClient / 28,
: cyClient - 3 * cyChar / 2,
: cxClient / 7, cyChar, TRUE) ;
: }
: SetFocus (hwnd) ;
: return 0 ;
:
: case WM_SETFOCUS :
: SetFocus (hwndScroll[idFocus]) ;
: return 0 ;
:
: case WM_VSCROLL :
: i = GetWindowLong ((HWND) lParam, GWL_ID) ;
:
: switch (LOWORD (wParam))
: {
: case SB_PAGEDOWN :
: color[i] += 15 ;
: // fall through
: case SB_LINEDOWN :
: color[i] = min(255, color[i] + 1) ;
: break ;
:
: case SB_PAGEUP :
: color[i] -= 15 ;
: // fall through
: case SB_LINEUP :
: color[i] = max (0, color[i] - 1) ;
: break ;
:
: case SB_TOP :
: color[i] = 0 ;
: break ;
:
: case SB_BOTTOM :
: color[i] = 255 ;
: break ;
:
: case SB_THUMBPOSITION :
: case SB_THUMBTRACK :
: color[i] = HIWORD (wParam) ;
: break ;
:
: default :
: break ;
: }
: SetScrollPos (hwndScroll[i], SB_CTL, color[i], TRUE) ;
: wsprintf (szBuffer, TEXT ("%i"), color[i]) ;
: SetWindowText (hwndValue[i], szBuffer) ;
:
: DeleteObject ((HBRUSH)
: SetClassLong (hwnd, GCL_HBRBACKGROUND, (LONG)
: CreateSolidBrush (RGB (color[0], color[1], color[2])))) ;
:
: InvalidateRect (hwnd, &rcColor, TRUE) ;
: return 0 ;
:
: case WM_CTLCOLORSCROLLBAR :
: i = GetWindowLong ((HWND) lParam, GWL_ID) ;
: return (LRESULT) hBrush[i] ;
:
: case WM_CTLCOLORSTATIC :
: i = GetWindowLong ((HWND) lParam, GWL_ID) ;
:
: if (i >= 3 && i <= 8) // static text controls
: {
: SetTextColor ((HDC) wParam, crPrim[i % 3]) ;
: SetBkColor ((HDC) wParam, GetSysColor (COLOR_BTNHIGHLIGHT));
: return (LRESULT) hBrushStatic ;
: }
: break ;
:
: case WM_SYSCOLORCHANGE :
: DeleteObject (hBrushStatic) ;
: hBrushStatic = CreateSolidBrush (GetSysColor (COLOR_BTNHIGHLIGHT)) ;
: return 0 ;
:
: case WM_DESTROY :
: DeleteObject ((HBRUSH)
: SetClassLong (hwnd, GCL_HBRBACKGROUND, (LONG)
: GetStockObject (WHITE_BRUSH))) ;
:
: for (i = 0 ; i < 3 ; i++)
: DeleteObject (hBrush[i]) ;
:
: DeleteObject (hBrushStatic) ;
: PostQuitMessage (0) ;
: return 0 ;
: }
: return DefWindowProc (hwnd, message, wParam, lParam) ;
: }
:
: LRESULT CALLBACK ScrollProc (HWND hwnd, UINT message,
: WPARAM wParam, LPARAM lParam)
: {
: int id = GetWindowLong (hwnd, GWL_ID) ;
:
: switch (message)
: {
: case WM_KEYDOWN :
: if (wParam == VK_TAB)
: SetFocus (GetDlgItem (GetParent (hwnd),
: (id + (GetKeyState (VK_SHIFT) < 0 ? 2 : 1)) % 3)) ;
: break ;
:
: case WM_SETFOCUS :
: idFocus = id ;
: break ;
: }
:
: return CallWindowProc(OldScroll[id], hwnd, message, wParam, lParam); // --> 여기에서 에러가 발생!!!
: // 바로 위부부분에서 아래와 같은 컴파일 에러가 발생합니다.
: // 아무리 봐도 문제가 없는 것 같은데...
: }
:
: [C++ Error] Unit1.cpp(257): E2034 Cannot convert 'long (__stdcall *)(void *,unsigned int,unsigned int,long)' to 'int (__stdcall *)()'
: [C++ Error] Unit1.cpp(257): E2342 Type mismatch in parameter 'lpPrevWndFunc' (wanted 'int (__stdcall *)()', got 'long (__stdcall *)(void *,unsigned int,unsigned int,long)')
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