Multiple selection in tree control using Win32

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Hello,

Did anybody did the multiple selection in the tree control
using win32..

i stucked here for multiple selection

i have only winProc of tree control so how to handle
in it

Please reply its very urgent basis

:)

Many thanks
.

Posted 7-Oct-12 21:00pm

Ram Shelke

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Comments

Sergey Alexandrovich Kryukov 8-Oct-12 3:23am

Is that really a question? Then the answer is: yes many did it. Do you need the answer for all the languages and libraries you listed?
--SA

enhzflep 8-Oct-12 4:11am

See here: how to solve multi-select problem

2 solutions

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skydger · Answer 1 · 2012-10-07T21:36:00

For Win32 API

C++

ctrlTree.Create(WS_CHILD|TVS_HASBUTTONS|TVS_CHECKBOX|, ctrlRect, this, IDC_TREECTRL);

Then check notification of NM_CLICK event

C++

case NM_CLICK:
{
    POINT cursorPos; GetCursorPos(&cursorPos);
    ScreenToClient(hwndTree, &cursorPos);
    TVHITTESTINFO thinf;
    thinf.pt = cursorPos;
    TreeView_HitTest(hwndTree, &thinf);
    if (thinf.flags == TVHT_ONITEMSTATEICON)
    {
        //state changed: check the state of the item under the cursor
        BOOL isChecked = TreeView_GetCheckState(hwndTree, thinf.hItem);
        if (isChecked)
        // do something
        else
        // do nothing?
    }
}
break;

For MFC
At form designer selectenable the "Check boxes" style on your control.
Then use the following code:

C++

DWORD dwLong = m_tree.GetWindowLong(GWL_EXSTYLE);
dwLong |= TVS_CHECKBOXES;
m_tree.SetWindowLong(GWL_EXSTYLE, dwLong);

Briti Sundar · Answer 2 · 2012-10-07T22:06:00

Solution 2

If you can use WTL CTreeViewCtrl.
for more details-
TreeCtrl - A WTL tree control with Windows Vista style item selection[^]

thanks.

Posted 7-Oct-12 22:06pm

Briti Sundar