Hello, I'm bumping this old thread because it is still a problem.
To refresh your memory, there is some bug with IUP GTK backends where
*sometimes* the sizing for a layout in a dialog is incorrect. It
happens *sometimes*, so while I can reproduce it, it is hard to
reproduce at will. When I launch the program, it is sometimes broken,
or not. It feels a little like it is a race condition between IUP and
GTK itself.
I have seen this problem with both the GTK2 and GTK3 backends, on many
different Linux distros and versions, including many versions of
Ubuntu, Debian, Raspbian, and Arch.
I have written a simplified test program that can reproduce the
problem (sometimes). I am attaching that program to this message. I
have uploaded a video showing the program working correctly and not
working correctly.
https://youtu.be/1ta8AK3jM2U
(The broken run version is at 7 seconds.)
I'm hoping you can help me trackdown what is causing this, or at least
narrow down what to look for. I tried stepping through a debugger, but
I can't seem to reproduce it when I do that, which is another reason I
think there is some kind of initialization race condition.
Thanks,
Eric
#include "iup.h"
#include <stddef.h>
const char* GenProj_GetLocalizedString(const char* key, const char* comment)
{
return IupGetLanguageString(key);
}
Ihandle* NewOrOpenView_Create(
Ihandle* image_new,
Ihandle* image_open,
Icallback on_new_project_callback,
Icallback on_open_project_callback,
void* user_data
)
{
Ihandle* main_dialog = NULL;
Ihandle* image_button_new = NULL;
Ihandle* image_button_open = NULL;
Ihandle* label_new = NULL;
Ihandle* label_open = NULL;
Ihandle* hbox_for_centered_ui = NULL;
Ihandle* vbox_for_centered_ui = NULL;
Ihandle* hbox_for_buttons = NULL;
Ihandle* hbox_for_labels = NULL;
Ihandle* vbox_for_new_button_and_label = NULL;
Ihandle* vbox_for_open_button_and_label = NULL;
image_button_new = IupButton(NULL, "newProjectButtonAction");
image_button_open = IupButton(NULL, "openProjectButtonAction");
// IupSetAttributeHandle(image_button_new, "IMAGE", image_new);
// IupSetAttributeHandle(image_button_open, "IMAGE", image_open);
label_new = IupLabel(GenProj_GetLocalizedString("New Project", "New Project"));
label_open = IupLabel(GenProj_GetLocalizedString("Open Project", "Open Project"));
IupSetAttribute(label_new, "EXPAND", "HORIZONTAL");
IupSetAttribute(label_open, "EXPAND", "HORIZONTAL");
IupSetAttribute(label_new, "SHRINK", "HORIZONTAL");
IupSetAttribute(label_open, "SHRINK", "HORIZONTAL");
IupSetAttribute(image_button_new, "EXPAND", "YES");
IupSetAttribute(image_button_open, "EXPAND", "YES");
IupSetAttribute(image_button_new, "SHRINK", "YES");
IupSetAttribute(image_button_open, "SHRINK", "YES");
IupSetAttribute(image_button_new, "ALIGNMENT", "ACENTER:ACENTER");
IupSetAttribute(image_button_open, "ALIGNMENT", "ACENTER:ACENTER");
IupSetAttribute(label_new, "ALIGNMENT", "ACENTER:ACENTER");
IupSetAttribute(label_open, "ALIGNMENT", "ACENTER:ACENTER");
IupSetAttribute(label_new, "FONTSIZE", "24");
IupSetAttribute(label_open, "FONTSIZE", "24");
vbox_for_new_button_and_label = IupVbox(
image_button_new,
label_new,
NULL
);
vbox_for_open_button_and_label = IupVbox(
image_button_open,
label_open,
NULL
);
IupSetAttribute(vbox_for_new_button_and_label, "ALIGNMENT", "ACENTER:ACENTER");
IupSetAttribute(vbox_for_open_button_and_label, "ALIGNMENT", "ACENTER:ACENTER");
IupSetAttribute(vbox_for_new_button_and_label, "SHRINK", "YES");
IupSetAttribute(vbox_for_open_button_and_label, "SHRINK", "YES");
hbox_for_buttons = IupHbox(
vbox_for_new_button_and_label,
vbox_for_open_button_and_label,
NULL
);
IupSetAttribute(hbox_for_buttons, "ALIGNMENT", "ACENTER:ACENTER");
IupSetAttribute(hbox_for_buttons, "MARGIN", "10x10");
// IupSetCallback(image_button_new, "ACTION", on_new_project_callback);
// IupSetCallback(image_button_open, "ACTION", on_open_project_callback);
// IupSetAttribute(image_button_new, "MY_USER_DATA", (const char*)user_data);
// IupSetAttribute(image_button_open, "MY_USER_DATA", (const char*)user_data);
return hbox_for_buttons;
}
static void IupExitPoint()
{
IupClose();
}
/******************************************************************************
* Main function *
******************************************************************************/
void IupEntryPoint()
{
// IupSetFunction("EXIT_CB", (Icallback)IupExitPoint);
Ihandle* box = NewOrOpenView_Create(
NULL,
NULL,
NULL,
NULL,
NULL
);
Ihandle* dialog = IupDialog(box);
IupShow(dialog);
}
int main(int argc, char* argv[])
{
IupOpen(&argc, &argv);
#if 0 // new ENTRY_POINT callback
IupSetFunction("ENTRY_POINT", (Icallback)IupEntryPoint);
IupMainLoop();
#else // legacy
IupEntryPoint();
IupMainLoop();
// legacy: New way should assume IupMainLoop may return immediately or this code is never reached.
IupClose();
#endif
return 0;
}
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