I have a gtkmm application which shares a clipboard from a VNC client (gtk-vnc) to/from the host. For reference, here is the relevant code:
signal_vnc_server_cut_text().connect([this](const Glib::ustring &text) {
auto clipboard = Gtk::Clipboard::get();
m_clipboard_text = text;
/* Works correctly on Windows and Linux */
clipboard->set_text(text);
clipboard->store();
});
Gtk::Clipboard::get()->signal_owner_change().connect([this](GdkEventOwnerChange *) {
auto clipboard = Gtk::Clipboard::get();
auto text = clipboard->wait_for_text();
/* text is correct on Linux, but see below for Windows */
std::cout << "Clipboard got: " << text << std::endl;
if (!text.empty() && text != m_clipboard_text)
client_cut_text(text);
});
The current code works as expected on a Linux host (can copy and paste both directions). However, on Windows, any time I attempt to copy from the host, wait_for_text() returns whatever text was in the copy buffer when the app started. Copying from the client on Windows does get the correct text (which I can then paste on the host fine), but once I copy from the host again, the clipboard data is reset to whatever was there from the start.
Am I missing something, or is this a Gtk bug?