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STR #968
| Application: | FLTK Library |
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| Status: | 1 - Closed w/Resolution |
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| Priority: | 4 - High, e.g. key functionality not working |
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| Scope: | 2 - Specific to an operating system |
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| Subsystem: | X11 |
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| Summary: | On X11, for FL_DND_ENTER and _DRAG, Fl::event_text() returns invalid strings |
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| Version: | 1.1-current |
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| Created By: | Portale |
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| Assigned To: | matt |
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| Fix Version: | 1.1.7 (SVN: v4616) |
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| Update Notification: | |
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Trouble Report Files:
No files
Trouble Report Comments:
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| #1 | Portale
16:31 Aug 04, 2005 |
| When the handle method of a window is called with the event parameters "FL_DND_ENTER", "FL_DND_DRAG" or "FL_DND_RELEASE", the current string that is returned by Fl::event_text() is either empty or invalid. It is only valid when "FL_PASTE" is handled.
- Fltk 1.1-current
- Windows XP
- Visual Studio .NET
...I didn't try it on other operating systems
Example code:
====
#include <FL/Fl.H>
#include <FL/Fl_Window.H>
#include <stdio.h>
class My_Fl_Window: public Fl_Window
{
public:
My_Fl_Window(int w, int h, const char *title = 0)
:Fl_Window(w, h, title) {}
int handle(int event)
{
switch (event)
{
case FL_DND_ENTER:
printf("FL_DND_ENTER... Fl::event_text()=\"%s\"\n", Fl::event_text());
return 1;
case FL_DND_DRAG:
return 1;
case FL_DND_RELEASE:
printf("FL_DND_RELEASE... Fl::event_text()=\"%s\"\n", Fl::event_text());
return 1;
case FL_PASTE:
printf("FL_PASTE... Fl::event_text()=\"%s\"\n", Fl::event_text());
return 1;
default:
return Fl_Window::handle(event);
}
}
};
int main(int argc, char **argv)
{
My_Fl_Window *window = new My_Fl_Window(300,180);
window->show(argc, argv);
return Fl::run();
}
====
Output when a file name is dropped the first time:
FL_DND_ENTER... Fl::event_text()=""
FL_DND_RELEASE... Fl::event_text()=""
FL_PASTE... Fl::event_text()="C:\pagefile.sys"
Output when the file name is dropped a second time:
FL_DND_ENTER... Fl::event_text()="¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦"☺
FL_DND_RELEASE... Fl::event_text()="¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦"☺
FL_PASTE... Fl::event_text()="C:\pagefile.sys" | |
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| #2 | Portale
14:21 Aug 05, 2005 |
| It is the same on OSX.
First Drag&Drop of a file:
FL_DND_ENTER... Fl::event_text()=""
FL_DND_RELEASE... Fl::event_text()=""
FL_PASTE... Fl::event_text()="/Developer/About Xcode Tools.pdf"
Second Drag&Drop of the file:
FL_DND_ENTER... Fl::event_text()=""
FL_DND_RELEASE... Fl::event_text()="????"
FL_PASTE... Fl::event_text()="/Developer/About Xcode Tools.pdf"
And on OSX, sometimes I only get FL_DND_ENTER. The others don't ocurr. Unfortunately only sporadically and I don't see a rule for that.
... or is my test program just buggy at the end? | |
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| #3 | mike
17:31 Aug 07, 2005 |
| I'm not sure what we can do here; AFAIK, we don't get the drag data until the drop event... | |
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| #4 | matt
12:31 Aug 08, 2005 |
| Fixed in Subversion repository. | |
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| #5 | matt
00:55 Aug 09, 2005 |
| Windows and X11 still need to be tested, probably fixed | |
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| #6 | matt
12:20 Aug 15, 2005 |
| Done for Windows as well. There are situations where the user will receive no or duplicat FL_DND_LEAVE messages, but my brain is currently much too fried to fix this as well. | |
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| #7 | matt
14:41 Aug 15, 2005 |
| I just looked at the X11 code, but I don't know enough Xlib to figure it out. I assume that XConvertSelection is the key somehow... . | |
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| #8 | mike
13:24 Oct 12, 2005 |
| X11 is still "broken". AFAIK, on X11 we don't get the event_text() data (to run through XConvertSelection) until the drop.
I'm looking through this to see what, if anything, we can do... | |
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| #9 | mike
13:41 Oct 12, 2005 |
| I experimented with this a bit, and it appears to be impossible to get the drag data prior to the position message, and even then it does not work with old GTK/GNOME apps.
In short, I think this is something we can't fix. | |
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| #10 | matt
00:27 Nov 02, 2005 |
| For X11, we simply return the string "<unknown>" since the content
of the DnD event is, err well, unknown at dnd enter, drag or leave events. | |
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