[Solved] CXTPMarkupTreeCtrl: how to modify markups

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   Hello.

I have a CXTPMarkupTreeCtrl in which each branch is a checkbox markup.

<CheckBox IsThreeState='True' IsChecked='False'>Something</CheckBox>

 How can I set this control to a "Checked" state simply in code, without any mouse or keyboard intervention?

--- What I know so far ...
I know that I can get a CXTPMarkupUIElement that is stored as an item data on each HTREEITEM like so:

CXTPMarkupUIElement* pUIElement = reinterpret_cast<CXTPMarkupUIElement*>(
                  GetItemData(hItem));

but that doesn't help me set new states for the control unless I find a way to transform that data into a CXTPMarkupCheckBox which I know is possible in response to markup handlers like CXTPMarkupCheckBox::m_pClickEvent, etc ...).  But I don't know how to randomly change a state with code.

Any help appreciated.

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mstj Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 23 June 2020 Status: Offline Points: 9	Post Options Post Reply Quote mstj Report Post Thanks(0) Quote Reply Topic: [Solved] CXTPMarkupTreeCtrl: how to modify markups Posted: 19 March 2021 at 7:05pm
	Hello. I have a CXTPMarkupTreeCtrl in which each branch is a checkbox markup. <CheckBox IsThreeState='True' IsChecked='False'>Something</CheckBox> How can I set this control to a "Checked" state simply in code, without any mouse or keyboard intervention? --- What I know so far ... I know that I can get a CXTPMarkupUIElement that is stored as an item data on each HTREEITEM like so: CXTPMarkupUIElement* pUIElement = reinterpret_cast<CXTPMarkupUIElement*>( GetItemData(hItem)); but that doesn't help me set new states for the control unless I find a way to transform that data into a CXTPMarkupCheckBox which I know is possible in response to markup handlers like CXTPMarkupCheckBox::m_pClickEvent, etc ...). But I don't know how to randomly change a state with code. Any help appreciated.

dbrookes Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 30 August 2019 Location: Australia Status: Offline Points: 70	Post Options Post Reply Quote dbrookes Report Post Thanks(0) Quote Reply Posted: 21 March 2021 at 8:15pm
	What I usually do is set the name attribute on your checkbox xaml. <CheckBox IsThreeState='True' IsChecked='False' Name='my_checkbox'>Something</CheckBox> That way you can use FindName on your parent UI element to get your checkbox. auto *pCheckBox = MARKUP_DYNAMICCAST(CXTPMarkupCheckBox, pUIElement->FindName(L"my_checkbox")); These markup controls have a SetChecked function you can then call. Hope that helps.

mstj Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 23 June 2020 Status: Offline Points: 9	Post Options Post Reply Quote mstj Report Post Thanks(0) Quote Reply Posted: 22 March 2021 at 9:33am
	Wonderful. It worked. Thank you very much.