void CColorCombo::InitDialog(HWND hWndCtrl, bool bDefaultColors, bool bAllowOffOption)
{
if (!hWndCtrl)
return;
SubclassWindow(hWndCtrl);
AddComboToList();
long lWidth = GetDroppedWidth();
long lRet = SetDroppedWidth(dtoi(2.75 * lWidth));
// Stuff the combobox with colors
// Add a place holder for the Custom option (the color picker)
int nItem = AddString("");
SetItemData(nItem, CLR_NONE);
if (bAllowOffOption)
{
nItem = AddString("");
SetItemData(nItem, CLR_DEFAULT);
}
if (bDefaultColors)
{
for (int i = 0; i < NDEFAULTCOLORS; i++)
{
nItem = AddString("");
SetItemData(nItem, CColorCombo::m_DefaultColors[i].Color);
}
}
}
int COXMultiComboBox::AdjustToFitSize()
{
int nResult;
if(m_bFitToSize)
{
int nTotalWidth=GetTotalWidth()+2*GetSystemMetrics(SM_CXBORDER);
int nTotalHeight=GetTotalHeight();
int nBorderHeight=GetSystemMetrics(SM_CYBORDER);
int nScrollbarHeight=GetSystemMetrics(SM_CYHSCROLL);
CRect rcDrop;
GetDroppedControlRect(&rcDrop);
if((nTotalHeight > rcDrop.Height()-2*nBorderHeight) ||
((nTotalWidth > rcDrop.Width()) &&
(nTotalHeight > rcDrop.Height()-nScrollbarHeight-2*nBorderHeight)))
{
nTotalWidth+=::GetSystemMetrics(SM_CXVSCROLL);
}
int nScreenWidth=::GetSystemMetrics(SM_CXSCREEN);
nTotalWidth=nTotalWidth>nScreenWidth ? nScreenWidth : nTotalWidth;
nResult=SetDroppedWidth(nTotalWidth);
}
else
nResult=SetDroppedWidth(1);
if(nResult!=CB_ERR)
{
// ... To indicate that the scrollbars has to be re-adjusted
m_fSizeChanged = TRUE;
// Redraws the listbox
if(::IsWindow(m_ComboLBox.m_hWnd))
{
m_ComboLBox.RedrawWindow(NULL,NULL,
RDW_ERASE|RDW_INVALIDATE|RDW_ERASENOW|RDW_UPDATENOW|RDW_FRAME);
}
}
return nResult;
}
//------------------------------------------------------------------------
//! CBN_DROPDOWN message handler called when the CComboBox control
//! is expanded into a dropdown list. Used to restrict the width of
//! the dropdown list to the max width.
//------------------------------------------------------------------------
void CGridEditorComboBox::OnDropDown()
{
int itemHeight = GetItemHeight(-1);
int nNumEntries = GetCount();
// Resize combobox according to actual element count
int visibleItemCount = m_MaxHeightItems < nNumEntries ? m_MaxHeightItems : nNumEntries; // min(m_MaxHeightItems, nNumEntries);
CRect rectExpanded;
GetClientRect(rectExpanded);
rectExpanded.bottom += visibleItemCount * GetItemHeight(0);
rectExpanded.bottom += GetSystemMetrics(SM_CYEDGE) * 2; // top & bottom edges
SetWindowPos(NULL, // not relative to any other windows
0, 0, // TopLeft corner doesn't change
rectExpanded.Width(), rectExpanded.Height(), // existing width, new height
SWP_NOMOVE | SWP_NOZORDER // don't move box or change z-ordering.
);
// Resize combo-box width to fit contents
int nMaxItemWidth = 0;
CString str;
// Find max-width of the elements
CDC* pDC = GetDC();
CFont* pFont = GetFont();
CFont* pOldFont = pDC->SelectObject(pFont);
for (int i = 0; i < nNumEntries; i++)
{
GetLBText(i, str);
int nLength = pDC->GetTextExtent(str).cx;
nMaxItemWidth = nMaxItemWidth > nLength ? nMaxItemWidth : nLength; // max(nMaxItemWidth, nLength);
if (nMaxItemWidth > m_MaxWidthPixels)
{
nMaxItemWidth = m_MaxWidthPixels;
break;
}
}
// Check if there are so many elements that we need space for a vertical scrollbar
CRect rect;
GetDroppedControlRect(&rect);
if (rect.Height() <= nNumEntries*GetItemHeight(0))
nMaxItemWidth +=::GetSystemMetrics(SM_CXVSCROLL);
// Add margin space to the calculations
nMaxItemWidth += pDC->GetTextExtent(_T("0")).cx;
pDC->SelectObject(pOldFont);
ReleaseDC(pDC);
SetDroppedWidth(nMaxItemWidth);
SetItemHeight(-1, itemHeight);
}
void CFontComboBox::OnDropdown()
/* ============================================================
Function : CFontComboBox::OnDropdown
Description : Sets the dropped down width of the combo
control to the max width of the string in
the list
Access : Protected
Return : void
Parameters : none
Usage : Called from MFC
============================================================*/
{
int scroll = ::GetSystemMetrics(SM_CXVSCROLL);
SetDroppedWidth( m_maxWidth + scroll );
}
void CFontComboBox::OnDropdown()
{
int nNumEntries = GetCount();
int nWidth = 0;
CString str;
CClientDC dc(this);
int nSave = dc.SaveDC();
dc.SelectObject(GetFont());
int nScrollWidth = ::GetSystemMetrics(SM_CXVSCROLL); //取滚动条宽度
for (int i = 0; i < nNumEntries; i++)
{
GetLBText(i, str);
int nLength = dc.GetTextExtent(str).cx + nScrollWidth;
nWidth = max(nWidth, nLength);
}
nWidth += dc.GetTextExtent(_T("0")).cx;
dc.RestoreDC(nSave);
if (!m_pFontVec.empty())
SetDroppedWidth(nWidth + FNTIMG_XSIZE); //设置宽度值
}
BOOL CInPlaceList::OnDropdown()
{
// TODO: Add your control notification handler code here
SetCursor(LoadCursor(NULL, IDC_ARROW));
int dx = 0;
CSize sz(0,0);
TEXTMETRIC tm;
CString sLBText;
CDC* pDC = GetDC();
CFont* pFont = GetFont();
// Select the listbox font, save the old font
CFont* pOldFont = pDC->SelectObject(pFont);
// Get the text metrics for avg char width
pDC->GetTextMetrics(&tm);
const int nCount = GetCount();
for(int i = 0; i < nCount; ++i)
{
GetLBText(i, sLBText);
sz = pDC->GetTextExtent(sLBText);
// Add the avg width to prevent clipping
sz.cx += tm.tmAveCharWidth;
if(sz.cx > dx)
dx = sz.cx;
}
// Select the old font back into the DC
pDC->SelectObject(pOldFont);
ReleaseDC(pDC);
// Adjust the width for the vertical scroll bar and the left and right border.
dx += ::GetSystemMetrics(SM_CXVSCROLL) + 2 * ::GetSystemMetrics(SM_CXEDGE);
if(GetDroppedWidth() < dx)
SetDroppedWidth(dx);
return Default() != 0;
}
CInPlaceList::CInPlaceList(CWnd* pParent, CRect& rect, DWORD dwStyle, UINT nID,
int nRow, int nColumn,
CStringArray& Items, CString sInitText,
UINT nFirstChar)
{
m_nNumLines = 4;
m_sInitText = sInitText;
m_nRow = nRow;
m_nCol = nColumn;
m_nLastChar = 0;
m_bExitOnArrows = FALSE; //(nFirstChar != VK_LBUTTON); // If mouse click brought us here,
// Create the combobox
DWORD dwComboStyle = WS_BORDER|WS_CHILD|WS_VISIBLE|WS_VSCROLL|
CBS_AUTOHSCROLL | dwStyle;
int nHeight = rect.Height();
rect.bottom = rect.bottom + m_nNumLines*nHeight + ::GetSystemMetrics(SM_CYHSCROLL);
if (!Create(dwComboStyle, rect, pParent, nID)) return;
// Add the strings
for (int i = 0; i < Items.GetSize(); i++)
AddString(Items[i]);
// Get the maximum width of the text strings
int nMaxLength = 0;
CClientDC dc(GetParent());
CFont* pOldFont = dc.SelectObject(pParent->GetFont());
for (i = 0; i < Items.GetSize(); i++)
nMaxLength = max(nMaxLength, dc.GetTextExtent(Items[i]).cx);
nMaxLength += (::GetSystemMetrics(SM_CXVSCROLL) + dc.GetTextExtent(_T(" ")).cx*2);
dc.SelectObject(pOldFont);
if (nMaxLength > rect.Width())
rect.right = rect.left + nMaxLength;
// Resize the edit window and the drop down window
MoveWindow(rect);
SetFont(pParent->GetFont());
SetItemHeight(-1, nHeight);
SetDroppedWidth(nMaxLength);
SetHorizontalExtent(0); // no horz scrolling
// Set the initial text to m_sInitText
if (SelectString(-1, m_sInitText) == CB_ERR)
SetWindowText(m_sInitText); // No text selected, so restore what was there before
// Subclass the combobox edit control if style includes CBS_DROPDOWN
if ((dwStyle & CBS_DROPDOWNLIST) != CBS_DROPDOWNLIST)
{
m_edit.SubclassDlgItem(IDC_COMBOEDIT, this);
SetFocus();
switch (nFirstChar)
{
case VK_LBUTTON:
case VK_RETURN: m_edit.SetSel((int)_tcslen(m_sInitText), -1); return;
case VK_BACK: m_edit.SetSel((int)_tcslen(m_sInitText), -1); break;
case VK_DOWN:
case VK_UP:
case VK_RIGHT:
case VK_LEFT:
case VK_NEXT:
case VK_PRIOR:
case VK_HOME:
case VK_END: m_edit.SetSel(0,-1); return;
default: m_edit.SetSel(0,-1);
}
SendMessage(WM_CHAR, nFirstChar);
}
else
SetFocus();
}
void CInPlaceList::OnDropdown()
{
SetDroppedWidth(GetCorrectDropWidth());
}
CInPlaceList::CInPlaceList(CWnd* pParent, CRect& rect, DWORD dwStyle, UINT nID,
int nRow, int nColumn,
COLORREF crFore, COLORREF crBack,
IEnumerator<tstring> *items, CString sInitText,
UINT nFirstChar)
{
m_crForeClr = crFore;
m_crBackClr = crBack;
m_nNumLines = 20;
m_sInitText = sInitText;
m_nRow = nRow;
m_nCol = nColumn;
m_nLastChar = 0;
m_bExitOnArrows = FALSE; //(nFirstChar != VK_LBUTTON); // If mouse click brought us here,
// Create the combobox
DWORD dwComboStyle = WS_BORDER|WS_CHILD|WS_VISIBLE|WS_VSCROLL| CBS_SORT |
CBS_AUTOHSCROLL | dwStyle;
int nHeight = rect.Height();
rect.bottom = rect.bottom + m_nNumLines*nHeight + ::GetSystemMetrics(SM_CYHSCROLL);
if (!Create(dwComboStyle, rect, pParent, nID)) return;
// Add the strings
tstring item;
items->Reset();
while(items->MoveNext(item))
{
AddString(item.c_str());
}
SetFont(pParent->GetFont());
SetItemHeight(-1, nHeight);
int nMaxLength = GetCorrectDropWidth();
/*
if (nMaxLength > rect.Width())
rect.right = rect.left + nMaxLength;
// Resize the edit window and the drop down window
MoveWindow(rect);
*/
SetDroppedWidth(nMaxLength);
SetHorizontalExtent(0); // no horz scrolling
// Set the initial text to m_sInitText
if (::IsWindow(m_hWnd) && SelectString(-1, m_sInitText) == CB_ERR)
SetWindowText(m_sInitText); // No text selected, so restore what was there before
ShowDropDown();
// Subclass the combobox edit control if style includes CBS_DROPDOWN
if ((dwStyle & CBS_DROPDOWNLIST) != CBS_DROPDOWNLIST)
{
m_edit.SubclassDlgItem(IDC_COMBOEDIT, this);
SetFocus();
switch (nFirstChar)
{
case VK_LBUTTON:
case VK_RETURN: m_edit.SetSel((int)_tcslen(m_sInitText), -1); return;
case VK_BACK: m_edit.SetSel((int)_tcslen(m_sInitText), -1); break;
case VK_DOWN:
case VK_UP:
case VK_RIGHT:
case VK_LEFT:
case VK_NEXT:
case VK_PRIOR:
case VK_HOME:
case VK_END: m_edit.SetSel(0,-1); return;
default: m_edit.SetSel(0,-1);
}
SendMessage(WM_CHAR, nFirstChar);
}
else
SetFocus();
}
CInPlaceList::CInPlaceList(CWnd* pParent, CRect& rect, DWORD dwStyle, UINT nID,
int nRow, int nColumn,
Strings& Items,
CString sInitText,
UINT nFirstChar)
{
m_nNumLines = 2;
m_sInitText = sInitText;
m_nRow = nRow;
m_nCol = nColumn;
m_nLastChar = 0;
m_bEdit = FALSE;
// Create the combobox
DWORD dwComboStyle = WS_BORDER|WS_CHILD|WS_VISIBLE|WS_VSCROLL|
CBS_AUTOHSCROLL | dwStyle;
if (!Create(dwComboStyle, rect, pParent, nID))
return;
COMBOBOXINFO cbInfo;
cbInfo.cbSize = sizeof(COMBOBOXINFO);
GetComboBoxInfo(&cbInfo);
m_edit.SubclassWindow(cbInfo.hwndItem);
m_ListBox.SubclassWindow(cbInfo.hwndList);
// Add the strings
for (size_t i = 0; i < Items.size(); i++)
AddString(Items[i]);
// Get the maximum width of the text strings
int nMaxLength = 0;
CClientDC dc(GetParent());
CFont* pOldFont = dc.SelectObject(pParent->GetFont());
for (size_t i = 0; i < Items.size(); i++)
nMaxLength = max(nMaxLength, dc.GetTextExtent(Items[i]).cx);
nMaxLength += (::GetSystemMetrics(SM_CXVSCROLL) + dc.GetTextExtent(_T(" ")).cx*2);
dc.SelectObject(pOldFont);
// Resize the edit window and the drop down window
SetFont(pParent->GetFont());
SetDroppedWidth(nMaxLength);
SetHorizontalExtent(0); // no horz scrolling
// Set the initial text to m_sInitText
SetWindowText(m_sInitText); // No text selected, so restore what was there before
ShowDropDown();
SetFocus();
// Added by KiteFly. When entering DBCS chars into cells the first char was being lost
// SenMessage changed to PostMessage (John Lagerquist)
switch (nFirstChar)
{
case VK_RETURN:
break;
default:
PostMessage(WM_CHAR, nFirstChar);
}
}
