to panda_w(好想睡啊!):LVN_ITEMCHANGED 消息不是我要的,太频繁触发了
我现在是想:只在 Checkbox 被点击时才做某些操作如果用 WM_LBUTTONDOWN ,再加上取鼠标位置下面的是不是那个 Checkbox,
不过如果 Windows设置改变了,可能会有偏差,还有谁有更好的办法?
我现在是想:只在 Checkbox 被点击时才做某些操作如果用 WM_LBUTTONDOWN ,再加上取鼠标位置下面的是不是那个 Checkbox,
不过如果 Windows设置改变了,可能会有偏差,还有谁有更好的办法?
panda_w的方法好!比如可以如下:
(mylistdlg.h)afx_msg void OnItemchangedList(NMHDR* pNMHDR, LRESULT* pResult);(mylistdlg.cpp)ON_NOTIFY(LVN_ITEMCHANGED, IDC_MY_LIST, OnItemchangedList)void Cmylistdlg::OnItemchangedList(NMHDR* pNMHDR, LRESULT* pResult)
{
NM_LISTVIEW* pNMListView = (NM_LISTVIEW*)pNMHDR;
*pResult = 0;if (pNMListView->uOldState == 0 && pNMListView->uNewState == 0)
return; // No change // Old check box state
BOOL bPrevState = (BOOL)(((pNMListView->uOldState &
LVIS_STATEIMAGEMASK)>>12)-1); if (bPrevState < 0) // On startup there's no previous state
bPrevState = 0; // so assign as false (unchecked)// New check box state
BOOL bChecked=(BOOL)(((pNMListView->uNewState & LVIS_STATEIMAGEMASK)>>12)-1); if (bChecked < 0) // On non-checkbox notifications assume false
bChecked = 0; if (bPrevState == bChecked) // No change in check box
return;// Now bChecked holds the new check box state
// ... do your process
}