void CMyTabCtrl::OnSelchange(NMHDR* pNMHDR, LRESULT* pResult)
{
// TODO: Add your control notification handler code here
int iNewTab = GetCurSel();
if (!IsTabEnabled(iNewTab))
{
SetCurSel(m_iSelectedTab);
}
else
{
TCITEM item;
CWnd* pWnd;
item.mask = TCIF_PARAM;
//** hide the current tab ---------
GetItem(m_iSelectedTab, &item);
pWnd = reinterpret_cast<CWnd*> (item.lParam);
ASSERT_VALID(pWnd);
pWnd->ShowWindow(SW_HIDE);
//** show the selected tab --------
GetItem(iNewTab, &item);
pWnd = reinterpret_cast<CWnd*> (item.lParam);
ASSERT_VALID(pWnd);
pWnd->ShowWindow(SW_SHOW);
}
*pResult = 0;
}
BOOL CXTabCtrl::SelectNextTab(BOOL bForward)
{
int iSum = bForward ? 1 : -1;
int iCurSel = GetCurSel();
int iCurSelSave(iCurSel);
do
{
iCurSel += iSum;
if (iCurSel < 0 || iCurSel == GetItemCount())
return FALSE;
if (IsTabEnabled(iCurSel))
{
if (iCurSel < GetItemCount())
{
SelectTab(iCurSel);
return TRUE;
}
return FALSE;
}
}
while (iCurSel != iCurSelSave);
return FALSE;
}
//////////////////
// Draw the tab: mimic SysTabControl32, except use gray if tab is disabled
//
void CMyTabCtrl::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct)
{
DRAWITEMSTRUCT& ds = *lpDrawItemStruct;
int iItem = ds.itemID;
// Get tab item info
char text[128];
TCITEM tci;
tci.mask = TCIF_TEXT;
tci.pszText = text;
tci.cchTextMax = sizeof(text);
GetItem(iItem, &tci);
// use draw item DC
CDC dc;
dc.Attach(ds.hDC);
// calculate text rectangle and color
CRect rc = ds.rcItem;
rc += CPoint(1,4); // ?? by trial and error
// draw the text
OnDrawText(dc, rc, text, !IsTabEnabled(iItem));
dc.Detach();
}
/////////////////
// Return the index of the previous enabled tab before a given index, or -1.
// (0 = first tab).
// If bWrap is TRUE, wrap from beginning to end; otherwise stop at zero.
//
int CMyTabCtrl::PrevEnabledTab(int iCurrentTab, BOOL bWrap)
{
for (int iTab = iCurrentTab-1; iTab != iCurrentTab; iTab--) {
if (iTab < 0) {
if (!bWrap)
return -1;
iTab = GetItemCount() - 1;
}
if (IsTabEnabled(iTab)) {
return iTab;
}
}
return -1;
}
BOOL CMyTabCtrl::SubclassDlgItem(UINT nID, CWnd* pParent)
{
if (!CTabCtrl::SubclassDlgItem(nID, pParent))
return FALSE;
ModifyStyle(0, TCS_OWNERDRAWFIXED);
// If first tab is disabled, go to next enabled tab
if (!IsTabEnabled(0)) {
int iTab = NextEnabledTab(0, TRUE);
SetActiveTab(iTab);
}
return TRUE;
}
/////////////////
// Return the index of the next enabled tab after a given index, or -1 if none
// (0 = first tab).
// If bWrap is TRUE, wrap from beginning to end; otherwise stop at zero.
//
int CMyTabCtrl::NextEnabledTab(int iCurrentTab, BOOL bWrap)
{
int nTabs = GetItemCount();
for (int iTab = iCurrentTab+1; iTab != iCurrentTab; iTab++) {
if (iTab >= nTabs) {
if (!bWrap)
return -1;
iTab = 0;
}
if (IsTabEnabled(iTab)) {
return iTab;
}
}
return -1;
}
//////////////////
// Selection is changing: disallow if tab is disabled
//
void CMyTabCtrl::OnSelChanging(NMHDR* pnmh, LRESULT* pRes)
{
TRACE("CMyTabCtrl::OnSelChanging\n");
// Figure out index of new tab we are about to go to, as opposed
// to the current one we're at. Believe it or not, Windows doesn't
// pass this info
//
TC_HITTESTINFO htinfo;
GetCursorPos(&htinfo.pt);
ScreenToClient(&htinfo.pt);
int iNewTab = HitTest(&htinfo);
if (iNewTab >= 0 && !IsTabEnabled(iNewTab))
*pRes = TRUE; // tab disabled: prevent selection
}
void CXTabCtrl::OnSelchange(NMHDR* pNMHDR, LRESULT* pResult)
{
// TODO: Add your control notification handler code here
int iNewTab = GetCurSel();
if (!IsTabEnabled(iNewTab))
{
SetCurSel(m_iSelectedTab);
}
else
{
TCITEM item;
CWnd* pWnd;
item.mask = TCIF_PARAM;
//** hide the current tab ---------
GetItem(m_iSelectedTab, &item);
pWnd = reinterpret_cast<CWnd*> (item.lParam);
ASSERT_VALID(pWnd);
pWnd->ShowWindow(SW_HIDE);
//** show the selected tab --------
GetItem(iNewTab, &item);
pWnd = reinterpret_cast<CWnd*> (item.lParam);
ASSERT_VALID(pWnd);
// 改变属性页的大小位置
CRect rc;
GetClientRect(rc);
rc.top += 20;
rc.bottom -= 3;
rc.left += 2;
rc.right -= 3;
pWnd->MoveWindow(&rc);
pWnd->ShowWindow(SW_SHOW);
// 发送到父窗口Tab项改变
GetParent()->SendMessage(WM_TAB_SEL_CHANGED,0,iNewTab);
}
*pResult = 0;
}
void CXTabCtrl::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct)
{
CRect rect = lpDrawItemStruct->rcItem;
rect.bottom+=2;
rect.top += ::GetSystemMetrics(SM_CYEDGE);
int nTabIndex = lpDrawItemStruct->itemID;
if (nTabIndex < 0) return;
BOOL bSelected = (nTabIndex == GetCurSel());
COLORREF crSelected = m_bColorSelected ? m_crSelected : GetSysColor(COLOR_BTNTEXT);
COLORREF crNormal = m_bColorNormal ? m_crNormal : GetSysColor(COLOR_BTNTEXT);
COLORREF crDisabled = m_bColorDisabled ? m_crDisabled : GetSysColor(COLOR_GRAYTEXT);
TCHAR label[64];
TC_ITEM item;
item.mask = TCIF_TEXT|TCIF_IMAGE;
item.pszText = label;
item.cchTextMax = 63;
if (!GetItem(nTabIndex, &item))
return;
CDC* pDC = CDC::FromHandle(lpDrawItemStruct->hDC);
if (!pDC)
return;
int nSavedDC = pDC->SaveDC();
CRect rectItem;
POINT pt;
GetItemRect(nTabIndex, &rectItem);
GetCursorPos(&pt);
ScreenToClient(&pt);
if (rectItem.PtInRect(pt))
m_iIndexMouseOver = nTabIndex;
pDC->SetBkMode(TRANSPARENT);
pDC->FillSolidRect(rect, ::GetSysColor(COLOR_BTNFACE));
//** Draw the image
CImageList* pImageList = GetImageList();
if (pImageList && item.iImage >= 0)
{
rect.left += pDC->GetTextExtent(_T(" ")).cx;
IMAGEINFO info;
pImageList->GetImageInfo(item.iImage, &info);
CRect ImageRect(info.rcImage);
int nYpos = rect.top;
pImageList->Draw(pDC, item.iImage, CPoint(rect.left, nYpos), ILD_TRANSPARENT);
rect.left += ImageRect.Width();
}
if (!IsTabEnabled(nTabIndex))
{
pDC->SetTextColor(crDisabled);
rect.top -= ::GetSystemMetrics(SM_CYEDGE);
pDC->DrawText(label, rect, DT_SINGLELINE|DT_VCENTER|DT_CENTER);
}
else
{
//** selected item -----
if (bSelected)
pDC->SetTextColor(crSelected);
else //** other item ---
{
if (m_bColorMouseOver && nTabIndex == m_iIndexMouseOver)
{
pDC->SetTextColor(m_crMouseOver);
}
else
{
pDC->SetTextColor(crNormal);
}
}
rect.top -= ::GetSystemMetrics(SM_CYEDGE);
pDC->DrawText(label, rect, DT_SINGLELINE|DT_VCENTER|DT_CENTER);
}
pDC->RestoreDC(nSavedDC);
}
