treecontrol | 易学教程

Angular tree control -— filter the nodes of a tree

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问题 I am following the link https://wix.github.io/angular-tree-control/ to explore different features of angular tree control.From the documentation could not properly understand what values i should give for filter comparator and filter expression to make it work in order to filter the nodes.Below is the code: <body ng-app="app"> Search: <input ng-model="searchTree"> <table id="searchTextResults"> <tr><th>Name</th><th>Age</th></tr> <tr ng-repeat="data in dataForTheTree | filter:searchTree"> <td>

Add icon for specific tree items in Tree(CTreeCtrl) in MFC

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问题 Can we add icons for specific tree items? I am adding items with icon using following function: HTREEITEM InsertItem(LPCTSTR lpszItem,int nImage,int nSelectedImage,HTREEITEM hParent = TVI_ROOT,HTREEITEM hInsertAfter = TVI_LAST); To skip icon for an item, i am using -1 value for nImage and nSelectedImage . By doing this, icon is not appearing but space is coming. 回答1: Have you looked at CTreeCtrl::SetItem? The easiest is to fill and pass a TVITEM structure. typedef struct tagTVITEM { UINT mask

Is there a tree control for the iphone?

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问题 Is there a Tree control available for the iphone? I need to represent a tree with sub nodes in a tree, how can I do it? Thanks 回答1: No tree widget by default. It's basically not there because you shouldn't really need one and most cases it should probably be avoided. A table navigation controller is the most common way to navigate down nodes in a hierarchy/tree usually. It's hard to fit a tree like control we have on our desktops in the touch world where you have huge fingers (so huge nodes)

Warning C26454: Arithmetic overflow: '-' operation produces a negative unsigned result at compile time (io.5)

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问题 Code analysis: ON_NOTIFY(TCN_SELCHANGE, IDC_TAB_HISTORY_TYPE, &CAssignHistoryDlg::OnTcnSelchangeTabHistoryType) Warning C26454: Arithmetic overflow: '-' operation produces a negative unsigned result at compile time (io.5). The definition of TCN_SELCHANGE is: #define TCN_FIRST (0U-550U) #define TCN_SELCHANGE (TCN_FIRST - 1) I can't see what else I can do! 回答1: You are trying to subtract a larger unsigned value from a smaller unsigned value and it's causing the result to wrap past zero. In your

Warning C26454: Arithmetic overflow: '-' operation produces a negative unsigned result at compile time (io.5)

阅读更多关于 Warning C26454: Arithmetic overflow: '-' operation produces a negative unsigned result at compile time (io.5)

Code analysis: ON_NOTIFY(TCN_SELCHANGE, IDC_TAB_HISTORY_TYPE, &CAssignHistoryDlg::OnTcnSelchangeTabHistoryType) Warning C26454: Arithmetic overflow: '-' operation produces a negative unsigned result at compile time (io.5). The definition of TCN_SELCHANGE is: #define TCN_FIRST (0U-550U) #define TCN_SELCHANGE (TCN_FIRST - 1) I can't see what else I can do! You are trying to subtract a larger unsigned value from a smaller unsigned value and it's causing the result to wrap past zero. In your case, I assume TCN_FIRST is defined as 0 so setting TCN_SELCHANGE to one will fix the problem. You should