This is just an example of a content provider class (see the article CWaitingTreeCtrl), which overrides the
PopulateItem virtual function to show network resources only when the user wants to access them.
You may specify the network resource to be used as the root of the tree control, as well as what kind of resources to be shown in the last level. You may also get specific information about the network resource associated with an existing item. To communicate with the class, you can use the standard
NETRESOURCE structure and related flags.
User interface features are those offered by the base class and can be further personalized with custom animations.
BOOL RefreshNetworkRoot(LPNETRESOURCE pRoot, DWORD dwStopAtDisplayType =
It associates a network resource with the root item and refreshes the tree items in the first level. It also sets what kind of container resources must not be further enumerated.
The first argument
pRoot is the address of the network resource you want as the root of the tree control. A value of
NULL means the network root.
dwStopAtDisplayType argument could take the same values as the
dwDisplayType field of the
NETRESOURCE structure. It specifies the last level of network resources that will be visible in the tree control.
The return value is
TRUE if you specified a valid resource,
BOOL GetItemResource(HTREEITEM hItem, LPNETRESOURCE pNr)
It retrieves the network resource associated to the specified item. If successful, the return value is
TRUE and the structure pointed by
pNr contains valid data, otherwise the return value is
Please note that this class is not fully functional. So far, it can be used only in a dialog, but I will work on it when I have more time. I released this version to provide an example of a content provider for my
CWaitingTreeCtrl class (see the article).
Any help or suggestion would be greatly appreciated. I plan to use this control in a new version of our NetSend utility, see this. Also, the latest beta releases of this class could be found here, for test only purpose.
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Always attracted by low-level programming and Assembly, he started to appreciate the joys of templates and STL while working for his Master Thesis. For seven months he was playing with airplanes and automatic control at the Unversity of Illinois at Urbana-Champaign, where he first met QNX and embedded systems.
In his job experience he learned Java to develop user interfaces and graphical editors, and re-discovered the Eclipse IDE that he had used in its early versions with the QNX SDK. He also deepened his knowledge of Linux and embedded systems, microcontrollers firmware and embedded voice recognition, while also practicing electronics design.
He graduated in Computer Engineering (Ingegneria informatica) at the University of Pisa, Italy, in December 2003. Currently working for an electronics and robotics company (www.robotechsrl.com
He lives in Pisa and in Follonica (GR), Italy.