}
return true;
}
bool CListUI::SelectRange(int iIndex, bool bTakeFocus)
{
int i = 0;
int iFirst = m_iCurSel;
int iLast = iIndex;
int iCount = GetCount();
if(iFirst == iLast) return true;
CControlUI* pControl = GetItemAt(iIndex);
if( pControl == NULL ) return false;
if( !pControl->IsVisible() ) return false;
if( !pControl->IsEnabled() ) return false;
IListItemUI* pListItem = static_cast
if( pListItem == NULL ) return false;
if( !pListItem->Select(true,false) ) {
m_iCurSel = -1;
return false;
}
EnsureVisible(iIndex);
if( bTakeFocus ) pControl->SetFocus();
if( m_pManager != NULL ) {
m_pManager->SendNotify(this, DUI_MSGTYPE_ITEMSELECT, iIndex, m_iCurSel);
}
//locate (and select) either first or last
// (so order is arbitrary)
while(i
i++;
break;
}
CControlUI* pControl = GetItemAt(i);
if( pControl != NULL) {
IListItemUI* pListItem = static_cast
if( pListItem != NULL ) pListItem->Select(false,false);
}
i++;
}
// select rest of range
while(i
if( pControl != NULL) {
IListItemUI* pListItem = static_cast
if( pListItem != NULL ) pListItem->Select(true,false);
}
if(i==iFirst || i == iLast){
i++;
break;
}
i++;
}
// unselect rest of range
while(i
if( pControl != NULL) {
IListItemUI* pListItem = static_cast
if( pListItem != NULL ) pListItem->Select(false,false);
}
i++;
}
return true;
}
2 鼠标滑动框选
业务逻辑：鼠标左键或右键按下，开始滑动，出现方框，列表项跟着选中或不选中。
设计思路：检测鼠标按下（UIEVENT_BUTTONDOWN，UIEVENT_RBUTTONDOWN），移动（UIEVENT_MOUSEMOVE），抬起（UIEVENT_BUTTONUP，UIEVENT_RBUTTONUP），还有上下文菜单（UIEVENT_CONTEXTMENU）。
按下时，设定标志位，记录初始点；移动时画框，并根据框与列表项是否选中，改变列表项的状态；抬起时，恢复标识位，右键抬起的话，
还要显示菜单。
主要代码片段：
void CCustomListUI::DoEvent(TEventUI& event){
BOOL bShift = (GetKeyState(VK_SHIFT) & 0x8000);
BOOL bCtrl = (GetKeyState(VK_CONTROL) & 0x8000);
if(bShift || bCtrl){
CListUI::DoEvent(event);
return;
}
switch( event.Type ) {
case UIEVENT_BUTTONDOWN://左键
case UIEVENT_RBUTTONDOWN://右键
{
m_bStartRect = true;
m_startPoint = event.ptMouse; //记录开始点
SetCapture(m_PM.GetPaintWindow());
}
break;
case UIEVENT_MOUSEMOVE:
//if(GetCapture() == m_PM.GetPaintWindow()){
if(m_bStartRect){
HWND hwnd = m_PM.GetPaintWindow();
RECT rcClient;
POINT point = event.ptMouse;
RECT rect = {0};
if(m_startPoint.x == point.x && m_startPoint.y == point.y) break;
::GetClientRect(hwnd, &rcClient);
::InvalidateRect(hwnd, &rcClient, FALSE);
if(point.x
rect = rectTemp;
}else if(point.x>m_startPoint.x && point.y < m_startPoint.y){
RECT rectTemp = {m_startPoint.x,point.y,point.x,m_startPoint.y};
rect = rectTemp;
}else if(point.x
RECT rectTemp = {point.x,m_startPoint.y,m_startPoint.x,point.y};
rect = rectTemp;
}else {
RECT rectTemp = {m_startPoint.x,m_startPoint.y,point.x,point.y};
rect = rectTemp;
}
DWORD bkColor2 = this->GetItemBkColor();
UpdateSelectionForRect(rect);
CRenderEngine::DrawRect(m_PM.GetPaintDC(),rect,1,bkColor2);//draw
}
break;
case UIEVENT_BUTTONUP:
{
m_bStartRect = false;
if(GetCapture