🚀 go-pugleaf

I am having a problem re-mapping a window after calling unmap
on that window.  Symptoms are:

    1. Have mapped a window (any ManagedWindow).
    2. Call window->unmap(), and window->display()->sync();
       Window unmaps just fine.
    3. Call window->map();
       The window maps, but it's contents are not displayed.
       However, the InputHandler objects are still active.

I have checked that the draw method of the top-level glyph
is getting called at map time, so it appears that the
double-buffering is the problem.

Does anyone know of other things that should be done either
when unmapping or re-mapping?  Do I need to unbind/bind?

Following is a simple example that demonstrates the problem.
Thanks for any advice.

Don Walters

----------------------------------------------
#include <IV-look/kit.h>
#include <InterViews/background.h>
#include <InterViews/display.h>
#include <InterViews/layout.h>
#include <InterViews/session.h>
#include <InterViews/window.h>
#include <stdio.h>
#include <unistd.h>

static ApplicationWindow* appWindow;

class App {
public:
    void msg();
};

declareActionCallback(App)
implementActionCallback(App)

void App::msg() {
    appWindow->unmap();
    appWindow->display()->sync();
    Session::instance()->quit();
}

int main(int argc, char** argv) {
    Session* session = new Session("Unmap", argc, argv);
    WidgetKit& kit = *WidgetKit::instance();
    const LayoutKit& layout = *LayoutKit::instance();
    App* a = new App;
    appWindow = 
	new ApplicationWindow(
	    kit.inset_frame(
		layout.margin(
		    kit.push_button(
			"Push Me To Unmap", new ActionCallback(App)(a, &App::msg)
		    ),
		    10.0
		)
	    )
	);
    session->run_window(appWindow);
    printf("sleeping for 3 seconds, then remapping.\n");
    sleep(3);
    appWindow->map();
    session->run_window(appWindow);
}