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/** \file
* \brief Windows Focus
*
* See Copyright Notice in "iup.h"
*/
#include <stdlib.h>
#include <stdio.h>
#include <windows.h>
#include "iup.h"
#include "iup_object.h"
#include "iup_focus.h"
#include "iup_assert.h"
#include "iup_drv.h"
#include "iup_attrib.h"
#include "iupwin_drv.h"
#include "iupwin_handle.h"
/* not defined for gcc */
#ifndef WM_CHANGEUISTATE
#define WM_CHANGEUISTATE 0x0127
#endif
#ifndef UIS_CLEAR
#define UIS_CLEAR 2
#endif
#ifndef UISF_HIDEFOCUS
#define UISF_HIDEFOCUS 0x1
#endif
/* Since Windows XP, the focus feedback only appears after the user press a key.
Except for the IupText where the feedback is the caret.
Before a key is pressed if you click in a control the focus feedback will be hidden.
We manually send WM_CHANGEUISTATE because we do not use IsDialogMessage anymore,
and the focus feedback was not shown even after the used press a key.
TODO: I would like a form to always show the feedback, but could not understand how WM_CHANGEUISTATE works.
Neither SystemParametersInfo(SPI_SETKEYBOARDCUES, TRUE) or SystemParametersInfo(SPI_SETKEYBOARDPREF, TRUE) worked.
*/
void iupdrvSetFocus(Ihandle *ih)
{
SetFocus(ih->handle);
/* See comments above */
SendMessage(ih->handle, WM_CHANGEUISTATE, UIS_CLEAR|UISF_HIDEFOCUS, 0); /* clear+hidefocus=showfocus */
}
void iupwinWmSetFocus(Ihandle *ih)
{
Ihandle* dialog = IupGetDialog(ih);
if (ih != dialog)
iupAttribSetStr(dialog, "_IUPWIN_LASTFOCUS", (char*)ih); /* used by IupMenu and here. */
else
{
/* if a control inside that dialog had the focus, then reset to it when the dialog gets the focus */
Ihandle* lastfocus = (Ihandle*)iupAttribGet(dialog, "_IUPWIN_LASTFOCUS");
if (lastfocus)
{
/* call the callback and update current focus before changing it again */
iupCallGetFocusCb(ih);
IupSetFocus(lastfocus);
return;
}
}
iupCallGetFocusCb(ih);
}
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