wxWidgets Discussion Forum

I could draw the Led, but i get those white areas... is there any way to make the component background transparent? I think calling Clear for the paint dc should fill the background in appropriately. Like so: void Led::OnPaint(wxPaintEvent& event) { wxPaintDC dc(this); dc.Clear(); ....

If you want to handle messages on windows, you should derive a class from whatever wwWidgets object you are using and override MSWOnNotify or MSWHandleMessage.

I gave an example of a small drawing program in the code dump forum.

I posted an example of how to do this here.

This code that you provided, will it work with wxDataViewTreeCtrl as well? Of course need to change few things, but overall? Also I'm wondering if there is a way to store the containers and child of treectrl and keep track of them, to restore them back to application, when user closes and re opens ...

There is no way to store a and reuse a wxTreeItemId.

From the documentation:

Cunoo wrote: ↑

Fri Feb 12, 2021 8:10 pm

thanks i did it with panel but what panel meaning ? i mean whyis must be like that ?

This is what the docs say:

It is usually placed within a frame. Its main feature over its parent class wxWindow is code for handling child windows and TAB traversal

There is the ToggleWindowStyle method, but as said not all flags can be changed after creation.

I've only ever used codeblocks, so I don't know.

The deb files for codeblocks need to use the system's wxWidgets package. So you'll need to install that if you want to use codeblocks. wxWidgets can work with different versions installed. However the project files for codeblocks will use the system package by default and you'll need to change some ...

When a top level window such as wxFrame only has 1 child and that child is not managed by a sizer, that child is automatically resized to fill all available space. The reason for this is that such windows should only have a wxPanel as their single child. So either 1) put your button in a sizer. Or b...

There is one problem though its not about wxTreeCtrl its about wxDataViewListCtrl, when say I have selected row 1 and I click on toggle column for row 8 for example, it does not add row 8's data to wxTreeCtrl, it tries to re add row 1's data, I have to select the row for which I wanna add the data ...

I don't see any reason why not. If you run through the algorithm checking for a label and !foundItem.IsOk() at the end, then there is no entry in the tree with that label.

I see wxBusyInfo doesn't derive from wxEvtHandler and so doesn't have a Bind method. Actually checking the documentation, you're supposed to show wxBusyInfo while doing a task that blocks the event loop. So you won't ordinarily be able to get any key events because you're blocking the event loop wit...

That's not fully equivalent to what I posted, but if it works for you it should be fine. The main difference is that you won't be checking the first item for your condition. Also, the algorithm I posted was a breadth first search. Your algorithm is an almost breadth first but slightly different orde...