edit.c

神龙卡开发原代码

                            + pSLEditData->leftMargin, pSLEditData->topMargin);
                    if (bScroll)
                        InvalidateRect (hWnd, NULL, FALSE);
                }
                return 0;
#if 0                
                case SCANCODE_INSERT:
                    pCtrl->userdata ^= EST_REPLACE;
                break;
#endif
                case VK_DELETE: /* SCANCODE_REMOVE: */
                    if ((pCtrl->userdata & EST_READONLY)
                            || (pSLEditData->editPos == pSLEditData->dataEnd)){
	#if 0	/* fix: no ping() */
			Ping ();
	#endif
                        return 0;
                    }
                    
                    if (edtIsACCharAtPosition (pSLEditData->buffer, 
			    pSLEditData->dataEnd, pSLEditData->editPos))
                        deleted = 2;
                    else
                        deleted = 1;
                        
                    for (i = pSLEditData->editPos; 
                            i < pSLEditData->dataEnd - deleted; i++)
                        pSLEditData->buffer [i] 
                            = pSLEditData->buffer [i + deleted];

                    pSLEditData->dataEnd -= deleted;
                    bChange = TRUE;
                    
                    InvRect.left = pSLEditData->leftMargin
			    + pSLEditData->caretOff * GetSysCharWidth (hWnd);
                    InvRect.top = pSLEditData->topMargin;
                    InvRect.right = pCtrl->clirect.right - pCtrl->clirect.left;
                    InvRect.bottom = pCtrl->clirect.bottom - pCtrl->clirect.top;

                    InvalidateRect (hWnd, &InvRect, FALSE);
                break;

                case VK_BACK: /* SCANCODE_BACKSPACE: */
                    if ((pCtrl->userdata & EST_READONLY)
                            || (pSLEditData->editPos == 0)) {
#if 0 	/* fix: no ping */
                        Ping ();
#endif
                        return 0;
                    }

                    if (edtIsACCharBeforePosition (pSLEditData->buffer, 
                                    pSLEditData->editPos))
                        deleted = 2;
                    else
                        deleted = 1;
                        
                    for (i = pSLEditData->editPos; 
                            i < pSLEditData->dataEnd;
                            i++)
                        pSLEditData->buffer [i - deleted] 
                            = pSLEditData->buffer [i];

                    pSLEditData->dataEnd -= deleted;
                    pSLEditData->editPos -= deleted;
                    bChange = TRUE;
                    
                    pSLEditData->caretOff -= deleted;
                    if (pSLEditData->caretOff == 0 
                            && pSLEditData->editPos != 0) {
                        if (edtIsACCharBeforePosition (pSLEditData->buffer, 
                                pSLEditData->editPos)) {
                            pSLEditData->startPos -= 2;
                            pSLEditData->caretOff = 2;
                        }
                        else {
                            pSLEditData->startPos --;
                            pSLEditData->caretOff = 1;
                        }
                        
                        InvRect.left = pSLEditData->leftMargin;
                        InvRect.top = pSLEditData->topMargin;
                        InvRect.right = pCtrl->clirect.right -
				pCtrl->clirect.left;
                        InvRect.bottom = pCtrl->clirect.bottom -
				pCtrl->clirect.top;
                    }
                    else {
                        InvRect.left = pSLEditData->leftMargin
			    + pSLEditData->caretOff * GetSysCharWidth (hWnd);
                        InvRect.top = pSLEditData->topMargin;
                        InvRect.right = pCtrl->clirect.right -
				pCtrl->clirect.left;
                        InvRect.bottom = pCtrl->clirect.bottom -
				pCtrl->clirect.top;
                    }

                    SetCaretPos (pSLEditData->caretOff * GetSysCharWidth (hWnd) 
                            + pSLEditData->leftMargin, pSLEditData->topMargin);
                    InvalidateRect (hWnd, &InvRect, FALSE);
                break;

                default:
                break;
            }
       
            if (bChange)
                SendMessage (GetParent (hWnd), WM_COMMAND, 
                    (WPARAM) MAKELONG (pCtrl->id, EN_CHANGE), (LPARAM) hWnd);
        }
	break;
#endif
        case WM_CHAR:
        {
            char charBuffer [2];
            int  i, chars, scrollStep, inserting;
            RECT InvRect;

            pSLEditData = (PSLEDITDATA) (pCtrl->userdata2);

            if (dwStyle & ES_READONLY) {

#if 0	/* fix: no ping() */
                Ping();
#endif
                return 0;
            }
            
            if (HIBYTE (wParam)) {
                charBuffer [0] = LOBYTE (wParam);
                charBuffer [1] = HIBYTE (wParam);
                chars = 2;
            }
            else {
                charBuffer [0] = LOBYTE (wParam);
                chars = 1;
            }
            
            if (chars == 1) {
                switch (charBuffer [0])
                {
                    case 0x00:  /* NULL */
                    case 0x07:  /* BEL */
                    case 0x08:  /* BS */
                    case 0x09:  /* HT */
                    case 0x0A:  /* LF */
                    case 0x0B:  /* VT */
                    case 0x0C:  /* FF */
                    case 0x0D:  /* CR */
                    case 0x1B:  /* Escape */
                    return 0;
                }
            }

            if (pCtrl->userdata & EST_REPLACE) {
                if (pSLEditData->dataEnd == pSLEditData->editPos)
                    inserting = chars;
                else if (edtIsACCharAtPosition (pSLEditData->buffer, 
                                pSLEditData->dataEnd,
                                pSLEditData->editPos)) {
                    if (chars == 2)
                        inserting = 0;
                    else
                        inserting = -1;
                }
                else {
                    if (chars == 2)
                        inserting = 1;
                    else
                        inserting = 0;
                }
            }
            else
                inserting = chars;

            /* check space */
            if (pSLEditData->dataEnd + inserting > pSLEditData->bufferLen) {

#if 0	/* fix: no ping() */
                Ping ();
#endif
                SendMessage (GetParent (hWnd), WM_COMMAND,
		    (WPARAM) MAKELONG (pCtrl->id, EN_MAXTEXT), (LPARAM) hWnd);
                return 0;
            }
            else if ((pSLEditData->hardLimit >= 0) 
                        && ((pSLEditData->dataEnd + inserting) 
                            > pSLEditData->hardLimit)) {
#if 0	/* fix: no ping() */
                Ping ();
#endif
                SendMessage (GetParent (hWnd), WM_COMMAND,
		    (WPARAM) MAKELONG (pCtrl->id, EN_MAXTEXT), (LPARAM) hWnd);
                return 0;
            }

            if (inserting == -1) {
                for (i = pSLEditData->editPos; i < pSLEditData->dataEnd-1; i++)
                    pSLEditData->buffer [i] = pSLEditData->buffer [i + 1];
            }
            else if (inserting > 0) {
                for (i = pSLEditData->dataEnd + inserting - 1; 
                        i > pSLEditData->editPos + inserting - 1; 
                        i--)
                    pSLEditData->buffer [i] 
                            = pSLEditData->buffer [i - inserting];
            }

            for (i = 0; i < chars; i++)
                    pSLEditData->buffer [pSLEditData->editPos + i] 
                        = charBuffer [i];
            
            pSLEditData->editPos += chars;
            pSLEditData->caretOff += chars;
            pSLEditData->dataEnd += inserting;

            if (pSLEditData->caretOff * GetSysCharWidth (hWnd) 
                            > edtGetOutWidth (pCtrl))
            {
                if (edtIsACCharAtPosition (pSLEditData->buffer, 
                                pSLEditData->dataEnd,
                                pSLEditData->startPos))
                    scrollStep = 2;
                else {
                    if (chars == 2) {
                        if (edtIsACCharAtPosition (pSLEditData->buffer, 
                                pSLEditData->dataEnd,
                                pSLEditData->startPos + 1))
                            scrollStep = 3;
                        else
                            scrollStep = 2;
                    }
                    else
                        scrollStep = 1;
                }
                    
                pSLEditData->startPos += scrollStep;

                pSLEditData->caretOff = 
                            pSLEditData->editPos - pSLEditData->startPos;

                InvRect.left = pSLEditData->leftMargin;
                InvRect.top = pSLEditData->topMargin;
                InvRect.right = pCtrl->clirect.right - pCtrl->clirect.left;
                InvRect.bottom = pCtrl->clirect.bottom - pCtrl->clirect.top;
            }
            else {
                InvRect.left = pSLEditData->leftMargin
                                    + (pSLEditData->caretOff - chars)
                                        * GetSysCharWidth (hWnd);
                InvRect.top = pSLEditData->topMargin;
                InvRect.right = pCtrl->clirect.right - pCtrl->clirect.left;
                InvRect.bottom = pCtrl->clirect.bottom - pCtrl->clirect.top;
            }

            SetCaretPos (pSLEditData->caretOff * GetSysCharWidth (hWnd) 
                            + pSLEditData->leftMargin, pSLEditData->topMargin);
            InvalidateRect (hWnd, &InvRect, FALSE);

            SendMessage (GetParent (hWnd), WM_COMMAND,
                (WPARAM) MAKELONG (pCtrl->id, EN_CHANGE), (LPARAM) hWnd);
        }
        break;

        case WM_GETTEXTLENGTH:
            pSLEditData = (PSLEDITDATA) (pCtrl->userdata2);
            return pSLEditData->dataEnd;
        
        case WM_GETTEXT:
        {
            char*   buffer = (char*)lParam;
            int     len;

            pSLEditData = (PSLEDITDATA) (pCtrl->userdata2);

            len = min ((int)wParam, pSLEditData->dataEnd);

            memcpy (buffer, pSLEditData->buffer, len);
            buffer [len] = '\0';

            return len;
        }
        break;

        case WM_SETTEXT:
        {
            int len;

            if (dwStyle & ES_READONLY)
                return 0;

            pSLEditData = (PSLEDITDATA) (pCtrl->userdata2);

            
            len = strlen ((char*)lParam);
            len = min (len, pSLEditData->bufferLen);
            
            if (pSLEditData->hardLimit >= 0)
                len = min (len, pSLEditData->hardLimit);
           
            pSLEditData->dataEnd = len;
            memcpy (pSLEditData->buffer, (char*)lParam, len);

            pSLEditData->editPos        = 0;
            pSLEditData->caretOff       = 0;
            pSLEditData->startPos       = 0;
            
            InvalidateRect (hWnd, NULL, FALSE);
        }
        break;

        case WM_LBUTTONDBLCLK:
        break;
        
        case WM_LBUTTONDOWN:
        {
            int newOff;

            pSLEditData = (PSLEDITDATA) (pCtrl->userdata2);
            newOff = edtGetOffset (hWnd,pSLEditData, LOWORD (lParam));
            
            if (newOff != pSLEditData->caretOff) 
	    {
                pSLEditData->editPos += newOff - pSLEditData->caretOff;
                pSLEditData->caretOff = newOff;

                SetCaretPos (pSLEditData->caretOff * GetSysCharWidth (hWnd) 
                        + pSLEditData->leftMargin, pSLEditData->topMargin);
            }
        }
        break;

        case WM_LBUTTONUP:
        break;
        
        case WM_MOUSEMOVE:
        break;

        case WM_GETDLGCODE:
        return DLGC_WANTCHARS | DLGC_HASSETSEL | DLGC_WANTARROWS;

        case EM_SETREADONLY:
            if (wParam)
                pCtrl->style/*dwStyle*/ |= ES_READONLY;
            else
                pCtrl->style/*dwStyle*/ &= ~ES_READONLY;
        return 0;
        
        case EM_SETPASSWORDCHAR:
            pSLEditData = (PSLEDITDATA) (pCtrl->userdata2);

            if (pSLEditData->passwdChar != (int)wParam) {
                if (dwStyle & ES_PASSWORD) {
                    pSLEditData->passwdChar = (int)wParam;
                    InvalidateRect (hWnd, NULL, TRUE);
                }
            }
        return 0;
    
        case EM_GETPASSWORDCHAR:
        {
            int* passwdchar;
            
            pSLEditData = (PSLEDITDATA) (pCtrl->userdata2);
            passwdchar = (int*) lParam;

            *passwdchar = pSLEditData->passwdChar;
        }
        return 0;
    
        case EM_LIMITTEXT:
        {
            int newLimit = (int)wParam;
            
            if (newLimit >= 0) {
                pSLEditData = (PSLEDITDATA) (pCtrl->userdata2);
                if (pSLEditData->bufferLen < newLimit)
                    pSLEditData->hardLimit = -1;
                else
                    pSLEditData->hardLimit = newLimit;
            }
        }
        return 0;
    
        default:
    		return DefWindowProc (hWnd, message, wParam, lParam);
        break;
    } 
    return 0;
}