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digitalmars.D.learn - GtkD mouse latency issues

reply Joseph <JE342 gmail.com> writes:
I have a GTK paned element and when I click to drag the handler, 
it does not respond immediately. I have to hold the left mouse 
button down for about 1 second and not move it before it 
"catches" and lets me drag, else I does not move.

I'm using Glade and the most simple example of a paned widget. 
Any ideas what could be causing this? Is GtkD introducing any 
type of UI response latency for the paned handle? In my app I 
have an icon/image that responds immediately.

Is polling being used by any chance for handling some of these 
events? I'm trying to determine if this is a Gtk or GtkD issue. 
The delay makes it pretty frustrating to use because it is an 
unnaturally long wait. Users will just want to click and 
immediately drag rather than wait a second to drag.

As far as I can tell, this only seems to be a problem with the 
paned handle, but I'm not 100% sure. It doesn't seem to be a UI 
update issue or it would eventually "catch up" with the movement 
of the mouse, which it doesn't.
Sep 10
parent Mike Wey <mike-wey example.com> writes:
On 11-09-17 06:29, Joseph wrote:
 I have a GTK paned element and when I click to drag the handler, it does 
 not respond immediately. I have to hold the left mouse button down for 
 about 1 second and not move it before it "catches" and lets me drag, 
 else I does not move.
 
 I'm using Glade and the most simple example of a paned widget. Any ideas 
 what could be causing this? Is GtkD introducing any type of UI response 
 latency for the paned handle? In my app I have an icon/image that 
 responds immediately.
 
 Is polling being used by any chance for handling some of these events? 
 I'm trying to determine if this is a Gtk or GtkD issue. The delay makes 
 it pretty frustrating to use because it is an unnaturally long wait. 
 Users will just want to click and immediately drag rather than wait a 
 second to drag.
 
 As far as I can tell, this only seems to be a problem with the paned 
 handle, but I'm not 100% sure. It doesn't seem to be a UI update issue 
 or it would eventually "catch up" with the movement of the mouse, which 
 it doesn't.
 
I can't seem to reproduce the issue, at least not on linux. If you haven't connected any signals everything should be handled by GTK. If you have some signals connected to the pane or other widgets, that might cause the issue. -- Mike Wey
Sep 11