dlgdata.cpp

c语言编程软件vc6.0中文绿色版_vc6.0官方下载

		else
		{
			TRACE0("Warning: skipping non-radio button in group.\n");
		}
		hWndCtrl = ::GetWindow(hWndCtrl, GW_HWNDNEXT);

	} while (hWndCtrl != NULL &&
		!(GetWindowLong(hWndCtrl, GWL_STYLE) & WS_GROUP));
}

/////////////////////////////////////////////////////////////////////////////
// Listboxes, comboboxes

void AFXAPI DDX_LBString(CDataExchange* pDX, int nIDC, CString& value)
{
	HWND hWndCtrl = pDX->PrepareCtrl(nIDC);
	if (pDX->m_bSaveAndValidate)
	{
		int nIndex = (int)::SendMessage(hWndCtrl, LB_GETCURSEL, 0, 0L);
		if (nIndex != -1)
		{
			int nLen = (int)::SendMessage(hWndCtrl, LB_GETTEXTLEN, nIndex, 0L);
			::SendMessage(hWndCtrl, LB_GETTEXT, nIndex,
					(LPARAM)(LPVOID)value.GetBufferSetLength(nLen));
		}
		else
		{
			// no selection
			value.Empty();
		}
		value.ReleaseBuffer();
	}
	else
	{
		// set current selection based on data string
		if (::SendMessage(hWndCtrl, LB_SELECTSTRING, (WPARAM)-1,
		  (LPARAM)(LPCTSTR)value) == LB_ERR)
		{
			// no selection match
			TRACE0("Warning: no listbox item selected.\n");
		}
	}
}

void AFXAPI DDX_LBStringExact(CDataExchange* pDX, int nIDC, CString& value)
{
	HWND hWndCtrl = pDX->PrepareCtrl(nIDC);
	if (pDX->m_bSaveAndValidate)
	{
		DDX_LBString(pDX, nIDC, value);
	}
	else
	{
		// set current selection based on data string
		int i = (int)::SendMessage(hWndCtrl, LB_FINDSTRINGEXACT, (WPARAM)-1,
		  (LPARAM)(LPCTSTR)value);
		if (i < 0)
		{
			// no selection match
			TRACE0("Warning: no listbox item selected.\n");
		}
		else
		{
			// select it
			SendMessage(hWndCtrl, LB_SETCURSEL, i, 0L);
		}
	}
}

void AFXAPI DDX_CBString(CDataExchange* pDX, int nIDC, CString& value)
{
	HWND hWndCtrl = pDX->PrepareCtrl(nIDC);
	if (pDX->m_bSaveAndValidate)
	{
		// just get current edit item text (or drop list static)
		int nLen = ::GetWindowTextLength(hWndCtrl);
		if (nLen > 0)
		{
			// get known length
			::GetWindowText(hWndCtrl, value.GetBufferSetLength(nLen), nLen+1);
		}
		else
		{
			// for drop lists GetWindowTextLength does not work - assume
			//  max of 255 characters
			::GetWindowText(hWndCtrl, value.GetBuffer(255), 255+1);
		}
		value.ReleaseBuffer();
	}
	else
	{
		// set current selection based on model string
		if (::SendMessage(hWndCtrl, CB_SELECTSTRING, (WPARAM)-1,
			(LPARAM)(LPCTSTR)value) == CB_ERR)
		{
			// just set the edit text (will be ignored if DROPDOWNLIST)
			AfxSetWindowText(hWndCtrl, value);
		}
	}
}

void AFXAPI DDX_CBStringExact(CDataExchange* pDX, int nIDC, CString& value)
{
	HWND hWndCtrl = pDX->PrepareCtrl(nIDC);
	if (pDX->m_bSaveAndValidate)
	{
		DDX_CBString(pDX, nIDC, value);
	}
	else
	{
		// set current selection based on data string
		int i = (int)::SendMessage(hWndCtrl, CB_FINDSTRINGEXACT, (WPARAM)-1,
		  (LPARAM)(LPCTSTR)value);
		if (i < 0)
		{
			// just set the edit text (will be ignored if DROPDOWNLIST)
			AfxSetWindowText(hWndCtrl, value);
		}
		else
		{
			// select it
			SendMessage(hWndCtrl, CB_SETCURSEL, i, 0L);
		}
	}
}

void AFXAPI DDX_LBIndex(CDataExchange* pDX, int nIDC, int& index)
{
	HWND hWndCtrl = pDX->PrepareCtrl(nIDC);
	if (pDX->m_bSaveAndValidate)
		index = (int)::SendMessage(hWndCtrl, LB_GETCURSEL, 0, 0L);
	else
		::SendMessage(hWndCtrl, LB_SETCURSEL, (WPARAM)index, 0L);
}

void AFXAPI DDX_CBIndex(CDataExchange* pDX, int nIDC, int& index)
{
	HWND hWndCtrl = pDX->PrepareCtrl(nIDC);
	if (pDX->m_bSaveAndValidate)
		index = (int)::SendMessage(hWndCtrl, CB_GETCURSEL, 0, 0L);
	else

		::SendMessage(hWndCtrl, CB_SETCURSEL, (WPARAM)index, 0L);
}

void AFXAPI DDX_Scroll(CDataExchange* pDX, int nIDC, int& value)
{
	HWND hWndCtrl = pDX->PrepareCtrl(nIDC);
	if (pDX->m_bSaveAndValidate)
		value = GetScrollPos(hWndCtrl, SB_CTL);
	else
		SetScrollPos(hWndCtrl, SB_CTL, value, TRUE);
}

void AFXAPI DDX_Slider(CDataExchange* pDX, int nIDC, int& value)
{
	HWND hWndCtrl = pDX->PrepareCtrl(nIDC);
	if (pDX->m_bSaveAndValidate)
		value = (int) ::SendMessage(hWndCtrl, TBM_GETPOS, 0, 0l);
	else
		::SendMessage(hWndCtrl, TBM_SETPOS, TRUE, value);
}

/////////////////////////////////////////////////////////////////////////////
// Range Dialog Data Validation

AFX_STATIC void AFXAPI _AfxFailMinMaxWithFormat(CDataExchange* pDX,
	 long minVal, long maxVal, LPCTSTR lpszFormat, UINT nIDPrompt)
	// error string must have '%1' and '%2' strings for min and max values
	// wsprintf formatting uses long values (format should be '%ld' or '%lu')
{
	ASSERT(lpszFormat != NULL);

	if (!pDX->m_bSaveAndValidate)
	{
		TRACE0("Warning: initial dialog data is out of range.\n");
		return;     // don't stop now
	}
	TCHAR szMin[32];
	TCHAR szMax[32];
	wsprintf(szMin, lpszFormat, minVal);
	wsprintf(szMax, lpszFormat, maxVal);
	CString prompt;
	AfxFormatString2(prompt, nIDPrompt, szMin, szMax);
	AfxMessageBox(prompt, MB_ICONEXCLAMATION, nIDPrompt);
	prompt.Empty(); // exception prep
	pDX->Fail();
}

//NOTE: don't use overloaded function names to avoid type ambiguities
void AFXAPI DDV_MinMaxByte(CDataExchange* pDX, BYTE value, BYTE minVal, BYTE maxVal)
{
	ASSERT(minVal <= maxVal);
	if (value < minVal || value > maxVal)
		_AfxFailMinMaxWithFormat(pDX, (long)minVal, (long)maxVal, _T("%u"),
			AFX_IDP_PARSE_INT_RANGE);
}

void AFXAPI DDV_MinMaxShort(CDataExchange* pDX, short value, short minVal, short maxVal)
{
	ASSERT(minVal <= maxVal);
	if (value < minVal || value > maxVal)
		_AfxFailMinMaxWithFormat(pDX, (long)minVal, (long)maxVal, _T("%ld"),
			AFX_IDP_PARSE_INT_RANGE);
}

void AFXAPI DDV_MinMaxInt(CDataExchange* pDX, int value, int minVal, int maxVal)
{
	ASSERT(minVal <= maxVal);
	if (value < minVal || value > maxVal)
		_AfxFailMinMaxWithFormat(pDX, (long)minVal, (long)maxVal, _T("%ld"),
			AFX_IDP_PARSE_INT_RANGE);
}

void AFXAPI DDV_MinMaxLong(CDataExchange* pDX, long value, long minVal, long maxVal)
{
	ASSERT(minVal <= maxVal);
	if (value < minVal || value > maxVal)
		_AfxFailMinMaxWithFormat(pDX, (long)minVal, (long)maxVal, _T("%ld"),
			AFX_IDP_PARSE_INT_RANGE);
}

void AFXAPI DDV_MinMaxUInt(CDataExchange* pDX, UINT value, UINT minVal, UINT maxVal)
{
	ASSERT(minVal <= maxVal);
	if (value < minVal || value > maxVal)
		_AfxFailMinMaxWithFormat(pDX, (long)minVal, (long)maxVal, _T("%lu"),
			AFX_IDP_PARSE_INT_RANGE);
}

void AFXAPI DDV_MinMaxDWord(CDataExchange* pDX, DWORD value, DWORD minVal, DWORD maxVal)
{
	ASSERT(minVal <= maxVal);
	if (value < minVal || value > maxVal)
		_AfxFailMinMaxWithFormat(pDX, (long)minVal, (long)maxVal, _T("%lu"),
			AFX_IDP_PARSE_INT_RANGE);
}

void AFXAPI DDV_MinMaxSlider(CDataExchange* pDX, DWORD value, DWORD minVal, DWORD maxVal)
{
	ASSERT(minVal <= maxVal);

	if (!pDX->m_bSaveAndValidate)
	{
		if (minVal > value || maxVal < value)
		{
#ifdef _DEBUG
			int nIDC = GetWindowLong(pDX->m_hWndLastControl, GWL_ID);
			TRACE1("Warning: initial dialog data is out of range in control ID %d.\n", nIDC);
#endif
			return;     // don't stop now
		}
	}

	::SendMessage(pDX->m_hWndLastControl, TBM_SETRANGEMIN, FALSE, (LPARAM) minVal);
	::SendMessage(pDX->m_hWndLastControl, TBM_SETRANGEMIN, TRUE, (LPARAM) maxVal);
}

/////////////////////////////////////////////////////////////////////////////
// Max Chars Dialog Data Validation

void AFXAPI DDV_MaxChars(CDataExchange* pDX, CString const& value, int nChars)
{
	ASSERT(nChars >= 1);        // allow them something
	if (pDX->m_bSaveAndValidate && value.GetLength() > nChars)
	{
		TCHAR szT[32];
		wsprintf(szT, _T("%d"), nChars);
		CString prompt;
		AfxFormatString1(prompt, AFX_IDP_PARSE_STRING_SIZE, szT);
		AfxMessageBox(prompt, MB_ICONEXCLAMATION, AFX_IDP_PARSE_STRING_SIZE);
		prompt.Empty(); // exception prep
		pDX->Fail();
	}
	else if (pDX->m_hWndLastControl != NULL && pDX->m_bEditLastControl)
	{
		// limit the control max-chars automatically
		::SendMessage(pDX->m_hWndLastControl, EM_LIMITTEXT, nChars, 0);
	}
}

/////////////////////////////////////////////////////////////////////////////
// Special DDX_ proc for subclassing controls

void AFXAPI DDX_Control(CDataExchange* pDX, int nIDC, CWnd& rControl)
{
	if (rControl.m_hWnd == NULL)    // not subclassed yet
	{
		ASSERT(!pDX->m_bSaveAndValidate);

		HWND hWndCtrl = pDX->PrepareCtrl(nIDC);

		if (!rControl.SubclassWindow(hWndCtrl))
		{
			ASSERT(FALSE);      // possibly trying to subclass twice?
			AfxThrowNotSupportedException();
		}
#ifndef _AFX_NO_OCC_SUPPORT
		else
		{
			// If the control has reparented itself (e.g., invisible control),
			// make sure that the CWnd gets properly wired to its control site.
			if (pDX->m_pDlgWnd->m_hWnd != ::GetParent(rControl.m_hWnd))
				rControl.AttachControlSite(pDX->m_pDlgWnd);
		}
#endif //!_AFX_NO_OCC_SUPPORT

	}
}

/////////////////////////////////////////////////////////////////////////////
// Global failure dialog helpers (used by database classes)

void AFXAPI AfxFailMaxChars(CDataExchange* pDX, int nChars)
{
	TCHAR lpszTemp[32];
	wsprintf(lpszTemp, _T("%d"), nChars);
	CString prompt;
	AfxFormatString1(prompt, AFX_IDP_PARSE_STRING_SIZE, lpszTemp);
	AfxMessageBox(prompt, MB_ICONEXCLAMATION, AFX_IDP_PARSE_STRING_SIZE);
	prompt.Empty(); // exception prep
	pDX->Fail();
}

void AFXAPI AfxFailRadio(CDataExchange* pDX)
{
	CString prompt;
	AfxFormatStrings(prompt, AFX_IDP_PARSE_RADIO_BUTTON, NULL, 0);
	AfxMessageBox(prompt, MB_ICONEXCLAMATION, AFX_IDP_PARSE_RADIO_BUTTON);
	prompt.Empty(); // exception prep
	pDX->Fail();
}

/////////////////////////////////////////////////////////////////////////////