libvncclient: Add FinishedFrameBufferUpdate callback

When working on a program which searches the display for some image, one
does not want to search again without getting an FB update.  Add a
callback to make this possible.

2 files changed, 4 insertions, 0 deletions

diff --git a/libvncclient/rfbproto.c b/libvncclient/rfbproto.c
index 21e5088..3b5c9c2 100644
--- a/libvncclient/rfbproto.c
+++ b/libvncclient/rfbproto.c
@@ -1553,6 +1553,9 @@ HandleRFBServerMessage(rfbClient* client)
     if (!SendIncrementalFramebufferUpdateRequest(client))
       return FALSE;
 
+    if (client->FinishedFrameBufferUpdate)
+      client->FinishedFrameBufferUpdate(client);
+
     break;
   }
 
diff --git a/libvncclient/vncviewer.c b/libvncclient/vncviewer.c
index a5f2f89..7e678fb 100644
--- a/libvncclient/vncviewer.c
+++ b/libvncclient/vncviewer.c
@@ -173,6 +173,7 @@ rfbClient* rfbGetClient(int bitsPerSample,int samplesPerPixel,
   client->SoftCursorLockArea = DummyRect;
   client->SoftCursorUnlockScreen = Dummy;
   client->GotFrameBufferUpdate = DummyRect;
+  client->FinishedFrameBufferUpdate = NULL;
   client->GetPassword = ReadPassword;
   client->MallocFrameBuffer = MallocFrameBuffer;
   client->Bell = Dummy;