From 6f9f4c6dbe329b4741bf65b97d253ee3cb45d091 Mon Sep 17 00:00:00 2001
From: Vadim Zeitlin <vadim@wxwidgets.org>
Date: Tue, 3 Oct 2023 16:28:55 +0200
Subject: [PATCH 1/2] Call wxYield() while showing wxBusyInfo in the dialogs
 sample

Otherwise it can't be seen at all with wxGTK.
---
 samples/dialogs/dialogs.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/samples/dialogs/dialogs.cpp b/samples/dialogs/dialogs.cpp
index dfbe38dd9a..fb747dc1fa 100644
--- a/samples/dialogs/dialogs.cpp
+++ b/samples/dialogs/dialogs.cpp
@@ -3542,7 +3542,11 @@ void MyFrame::ShowRichBusyInfo(wxCommandEvent& WXUNUSED(event))
                 .Transparency(4*wxALPHA_OPAQUE/5)
         );
 
-    wxSleep(5);
+    for ( int i = 0; i < 20; i++ )
+    {
+        wxTheApp->Yield();
+        wxMilliSleep(250);
+    }
 }
 
 #endif // wxUSE_BUSYINFO

From 71001385c6d66412f3f07b0fdc5a8d5ab022f296 Mon Sep 17 00:00:00 2001
From: Vadim Zeitlin <vadim@wxwidgets.org>
Date: Tue, 3 Oct 2023 16:31:47 +0200
Subject: [PATCH 2/2] Fix wxBusyInfo layout when using wxGTK

Use a dirty hack to ensure the window is created (roughly) as tall as it
needs to be instead of being created too small and truncating the text
in it.
---
 src/generic/busyinfo.cpp | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/src/generic/busyinfo.cpp b/src/generic/busyinfo.cpp
index 6b00a4f8b9..b27e568ec6 100644
--- a/src/generic/busyinfo.cpp
+++ b/src/generic/busyinfo.cpp
@@ -59,6 +59,21 @@ void wxBusyInfo::Init(const wxBusyInfoFlags& flags)
                                                   wxDefaultSize,
                                                   wxALIGN_CENTRE);
         title->SetFont(title->GetFont().Scaled(2));
+
+#ifdef __WXGTK__
+        // This bad hack is needed to fix layout under GTK: the font sent above
+        // is not taken into account for the size calculation until the window
+        // is shown but we need the correct size when computing the best size
+        // below, as otherwise we would make the entire frame too small and
+        // when the correct size is used for the actual layout later, the title
+        // control would take too much space pushing the text below it outside
+        // of the window bounds.
+        //
+        // So preemptively make it about as big as it's going to be to prevent
+        // this from happening.
+        title->SetMinSize(2*title->GetBestSize());
+#endif // __WXGTK__
+
 #if wxUSE_MARKUP
         title->SetLabelMarkup(flags.m_title);
 #else