Re: wxGauge not updating correctly, Fedora, gtk+3.24, wxWidgets 3.1.6 HEAD (Issue #22120)

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paulcor

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Feb 19, 2022, 1:31:05 AM2/19/22

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Simpler diff to the widgets sample below. Happens with GTK >= 3.20. I think this is related to gdk_window_process_updates(), which has been deprecated. Unfortunately, with GTK, "deprecated" all too often means "don't use this, because we broke it".

diff --git a/samples/widgets/gauge.cpp b/samples/widgets/gauge.cpp
index ae7ad77f8d..34474b5ed3 100644
--- a/samples/widgets/gauge.cpp
+++ b/samples/widgets/gauge.cpp
@@ -444,12 +444,15 @@ void GaugeWidgetsPage::OnCheckOrRadioBox(wxCommandEvent& WXUNUSED(event))
     CreateGauge();
 }
 
+#include "wx/statusbr.h"
+extern wxStatusBar* sb;
 void GaugeWidgetsPage::OnProgressTimer(wxTimerEvent& WXUNUSED(event))
 {
     int val = m_gauge->GetValue();
     if ( (unsigned)val < m_range )
     {
         m_gauge->SetValue(val + 1);
+        sb->SetStatusText(val & 1 ? "aaaa" : "BBBB");
     }
     else // reached the end
     {
diff --git a/samples/widgets/widgets.cpp b/samples/widgets/widgets.cpp
index 0ac3997c1c..eb6424ec77 100644
--- a/samples/widgets/widgets.cpp
+++ b/samples/widgets/widgets.cpp
@@ -362,6 +362,7 @@ wxEND_EVENT_TABLE()
 // app class
 // ----------------------------------------------------------------------------
 
+wxStatusBar* sb;
 bool WidgetsApp::OnInit()
 {
     if ( !wxApp::OnInit() )
@@ -390,6 +391,7 @@ bool WidgetsApp::OnInit()
 
     wxFrame *frame = new WidgetsFrame(title + " widgets demo");
     frame->Show();
+    sb = frame->CreateStatusBar();
 
 #if USE_LOG
     m_logTarget = wxLog::GetActiveTarget();

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VZ

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Mar 23, 2022, 6:16:35 PM3/23/22

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So would it be enough to avoid calling Update() in wxStatusBarGeneric::DoUpdateStatusText() if it's unnecessary because, apparently, there is already a pending update after gtk_progress_bar_set_fraction() call? Would there be some GTK-native way for determining this?