Don't reserve space for hidden controller in wxBookCtrl.

Even when the controller was hidden, space was still allocated for it by
wxBookCtrl. Fix this by only reserving extra space when the controller is
shown.

Closes #12609.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@65894 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/src/common/bookctrl.cpp b/src/common/bookctrl.cpp
index cfc13b78a3e537c3c80629e50cfc39037a6da1eb..c635c2cbf86e6c3a2b08245c26b0f53a7b454e5c 100644 (file)
--- a/src/common/bookctrl.cpp
+++ b/src/common/bookctrl.cpp
@@ -311,7 +311,10 @@ void wxBookCtrlBase::OnSize(wxSizeEvent& event)
 
 wxSize wxBookCtrlBase::GetControllerSize() const
 {
-    if ( !m_bookctrl )
+    // For at least some book controls (e.g. wxChoicebook) it may make sense to
+    // (temporarily?) hide the controller and we shouldn't leave extra space
+    // for the hidden control in this case.
+    if ( !m_bookctrl || !m_bookctrl->IsShown() )
         return wxSize(0, 0);
 
     const wxSize sizeClient = GetClientSize(),