/**
* Sets the selection state of the receiver.
*
* <p>When the receiver is of type <code>CHECK</code> or <code>RADIO</code>, it is selected when
* it is checked.
*
* @param selected the new selection state
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public void setSelection(boolean selected) {
checkWidget();
if ((style & (SWT.CHECK | SWT.RADIO)) == 0) return;
if ((OS.IsPPC || OS.IsSP) && parent.hwndCB != 0) return;
long /*int*/ hMenu = parent.handle;
if (OS.IsWinCE) {
int index = parent.indexOf(this);
if (index == -1) return;
int uCheck = OS.MF_BYPOSITION | (selected ? OS.MF_CHECKED : OS.MF_UNCHECKED);
OS.CheckMenuItem(hMenu, index, uCheck);
} else {
MENUITEMINFO info = new MENUITEMINFO();
info.cbSize = MENUITEMINFO.sizeof;
info.fMask = OS.MIIM_STATE;
boolean success = OS.GetMenuItemInfo(hMenu, id, false, info);
if (!success) error(SWT.ERROR_CANNOT_SET_SELECTION);
info.fState &= ~OS.MFS_CHECKED;
if (selected) info.fState |= OS.MFS_CHECKED;
success = OS.SetMenuItemInfo(hMenu, id, false, info);
if (!success) {
/*
* Bug in Windows. For some reason SetMenuItemInfo(),
* returns a fail code when setting the enabled or
* selected state of a default item, but sets the
* state anyway. The fix is to ignore the error.
*
* NOTE: This only happens on Vista.
*/
if (!OS.IsWinCE && OS.WIN32_VERSION >= OS.VERSION(6, 0)) {
success = id == OS.GetMenuDefaultItem(hMenu, OS.MF_BYCOMMAND, OS.GMDI_USEDISABLED);
}
if (!success) {
int error = OS.GetLastError();
SWT.error(
SWT.ERROR_CANNOT_SET_SELECTION,
null,
" [GetLastError=0x" + Integer.toHexString(error) + "]"); // $NON-NLS-1$ $NON-NLS-2$
}
}
}
parent.redraw();
}
/**
* Enables the receiver if the argument is <code>true</code>, and disables it otherwise. A
* disabled menu item is typically not selectable from the user interface and draws with an
* inactive or "grayed" look.
*
* @param enabled the new enabled state
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public void setEnabled(boolean enabled) {
checkWidget();
if ((OS.IsPPC || OS.IsSP) && parent.hwndCB != 0) {
long /*int*/ hwndCB = parent.hwndCB;
TBBUTTONINFO info = new TBBUTTONINFO();
info.cbSize = TBBUTTONINFO.sizeof;
info.dwMask = OS.TBIF_STATE;
OS.SendMessage(hwndCB, OS.TB_GETBUTTONINFO, id, info);
info.fsState &= ~OS.TBSTATE_ENABLED;
if (enabled) info.fsState |= OS.TBSTATE_ENABLED;
OS.SendMessage(hwndCB, OS.TB_SETBUTTONINFO, id, info);
} else {
/*
* Feature in Windows. For some reason, when the menu item
* is a separator, GetMenuItemInfo() always indicates that
* the item is not enabled. The fix is to track the enabled
* state for separators.
*/
if ((style & SWT.SEPARATOR) != 0) {
if (enabled) {
state &= ~DISABLED;
} else {
state |= DISABLED;
}
}
long /*int*/ hMenu = parent.handle;
if (OS.IsWinCE) {
int index = parent.indexOf(this);
if (index == -1) return;
int uEnable = OS.MF_BYPOSITION | (enabled ? OS.MF_ENABLED : OS.MF_GRAYED);
OS.EnableMenuItem(hMenu, index, uEnable);
} else {
MENUITEMINFO info = new MENUITEMINFO();
info.cbSize = MENUITEMINFO.sizeof;
info.fMask = OS.MIIM_STATE;
boolean success = OS.GetMenuItemInfo(hMenu, id, false, info);
if (!success) {
int error = OS.GetLastError();
SWT.error(
SWT.ERROR_CANNOT_SET_ENABLED,
null,
" [GetLastError=0x" + Integer.toHexString(error) + "]"); // $NON-NLS-1$ $NON-NLS-2$
}
int bits = OS.MFS_DISABLED | OS.MFS_GRAYED;
if (enabled) {
if ((info.fState & bits) == 0) return;
info.fState &= ~bits;
} else {
if ((info.fState & bits) == bits) return;
info.fState |= bits;
}
success = OS.SetMenuItemInfo(hMenu, id, false, info);
if (!success) {
/*
* Bug in Windows. For some reason SetMenuItemInfo(),
* returns a fail code when setting the enabled or
* selected state of a default item, but sets the
* state anyway. The fix is to ignore the error.
*
* NOTE: This only happens on Vista.
*/
if (!OS.IsWinCE && OS.WIN32_VERSION >= OS.VERSION(6, 0)) {
success = id == OS.GetMenuDefaultItem(hMenu, OS.MF_BYCOMMAND, OS.GMDI_USEDISABLED);
}
if (!success) {
int error = OS.GetLastError();
SWT.error(
SWT.ERROR_CANNOT_SET_ENABLED,
null,
" [GetLastError=0x" + Integer.toHexString(error) + "]"); // $NON-NLS-1$ $NON-NLS-2$
}
}
}
}
parent.destroyAccelerators();
parent.redraw();
}
