X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/03647350fc7cd141953c72e0284e928847d30f44..abd474ea63667f727940a009cc3e0b23ba9f418f:/src/common/ctrlsub.cpp

diff --git a/src/common/ctrlsub.cpp b/src/common/ctrlsub.cpp
index d0a197da1f..388af3e6ff 100644
--- a/src/common/ctrlsub.cpp
+++ b/src/common/ctrlsub.cpp
@@ -165,6 +165,8 @@ void wxItemContainer::SetClientObject(unsigned int n, wxClientData *data)
     wxASSERT_MSG( !HasClientUntypedData(),
                   wxT("can't have both object and void client data") );
 
+    wxCHECK_RET( IsValid(n), "Invalid index passed to SetClientObject()" );
+
     if ( HasClientObjectData() )
     {
         wxClientData * clientDataOld
@@ -188,9 +190,24 @@ wxClientData *wxItemContainer::GetClientObject(unsigned int n) const
     wxCHECK_MSG( HasClientObjectData(), NULL,
                   wxT("this window doesn't have object client data") );
 
+    wxCHECK_MSG( IsValid(n), NULL,
+                 "Invalid index passed to GetClientObject()" );
+
     return static_cast<wxClientData *>(DoGetItemClientData(n));
 }
 
+wxClientData *wxItemContainer::DetachClientObject(unsigned int n)
+{
+    wxClientData * const data = GetClientObject(n);
+    if ( data )
+    {
+        // reset the pointer as we don't own it any more
+        DoSetItemClientData(n, NULL);
+    }
+
+    return data;
+}
+
 void wxItemContainer::SetClientData(unsigned int n, void *data)
 {
     if ( !HasClientData() )
@@ -202,6 +219,8 @@ void wxItemContainer::SetClientData(unsigned int n, void *data)
     wxASSERT_MSG( HasClientUntypedData(),
                   wxT("can't have both object and void client data") );
 
+    wxCHECK_RET( IsValid(n), "Invalid index passed to SetClientData()" );
+
     DoSetItemClientData(n, data);
 }
 
@@ -210,6 +229,9 @@ void *wxItemContainer::GetClientData(unsigned int n) const
     wxCHECK_MSG( HasClientUntypedData(), NULL,
                   wxT("this window doesn't have void client data") );
 
+    wxCHECK_MSG( IsValid(n), NULL,
+                 "Invalid index passed to GetClientData()" );
+
     return DoGetItemClientData(n);
 }