AUI pane becomes huge on DPI change if a partial minimum size is specified (Issue #26557)
taler21
taler21 created an issue (wxWidgets/wxWidgets#26557)For example, if an AUI pane has a minimum width but no minimum height specified, and it has a scroll bar because its content cannot be fully displayed at its current size, the pane becomes huge when the DPI changed.
It seems as if the size of the pane grows to such an extent that its entire content would be visible, even if the size extends far beyond the screen.
I would expect the current size to be retained, merely scaled to the changed DPI.
The issue can also be reproduced in the aui sample with the following changes.
diff -r -u -p a/samples/aui/auidemo.cpp b/samples/aui/auidemo.cpp --- a/samples/aui/auidemo.cpp 2026-06-03 08:31:53.061465300 +0200 +++ b/samples/aui/auidemo.cpp 2026-06-03 08:32:40.014698200 +0200 @@ -1044,7 +1044,7 @@ MyFrame::MyFrame(wxWindow* parent, m_mgr.AddPane(CreateTreeCtrl(), wxAuiPaneInfo(). Name("tree").Caption("Tree Pane"). - Left().Layer(1).Position(1). + Left().Layer(1).Position(1).MinSize(FromDIP(wxSize(200,-1))). CloseButton(true).MaximizeButton(true).MinimizeButton(). IconMin(wxArtProvider::GetBitmapBundle(wxART_CUT, wxART_MENU))); @@ -2573,6 +2573,9 @@ wxTreeCtrl* MyFrame::CreateTreeCtrl() tree->AppendItem(id, "Subitem 3", 1); tree->AppendItem(id, "Subitem 4", 1); tree->AppendItem(id, "Subitem 5", 1); + for (int j = 6; j <= 20; ++j) + tree->AppendItem(id, wxString::Format("Subitem %d", j), 1); + tree->Expand(id); }
Platform and version information
- wxWidgets version you use: master (39c73b4)
- wxWidgets port you use: wxMSW
- OS and its version: Windows 11
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