本文整理汇总了C++中KeyEvent::IsAltDown方法的典型用法代码示例。如果您正苦于以下问题：C++ KeyEvent::IsAltDown方法的具体用法？C++ KeyEvent::IsAltDown怎么用？C++ KeyEvent::IsAltDown使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类KeyEvent的用法示例。
在下文中一共展示了KeyEvent::IsAltDown方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: OnKeyEvent
bool FocusManager::OnKeyEvent(const KeyEvent& event)
{
// If the focused view wants to process the key event as is, let it be.
// On Linux we always dispatch key events to the focused view first, so
// we should not do this check here. See also WidgetGtk::OnKeyEvent().
if(focused_view_ && focused_view_->SkipDefaultKeyEventProcessing(event))
{
return true;
}
// Intercept Tab related messages for focus traversal.
// Note that we don't do focus traversal if the root window is not part of the
// active window hierarchy as this would mean we have no focused view and
// would focus the first focusable view.
HWND top_window = widget_->GetNativeView();
HWND active_window = ::GetActiveWindow();
if((active_window==top_window || ::IsChild(active_window, top_window)) &&
IsTabTraversalKeyEvent(event))
{
AdvanceFocus(event.IsShiftDown());
return false;
}
// Intercept arrow key messages to switch between grouped views.
KeyboardCode key_code = event.GetKeyCode();
if(focused_view_ && focused_view_->GetGroup()!=-1 &&
(key_code==VKEY_UP || key_code==VKEY_DOWN ||
key_code==VKEY_LEFT || key_code==VKEY_RIGHT))
{
bool next = (key_code==VKEY_RIGHT || key_code==VKEY_DOWN);
std::vector<View*> views;
focused_view_->GetParent()->GetViewsWithGroup(
focused_view_->GetGroup(), &views);
std::vector<View*>::const_iterator iter = std::find(views.begin(),
views.end(), focused_view_);
DCHECK(iter != views.end());
int index = static_cast<int>(iter - views.begin());
index += next ? 1 : -1;
if(index < 0)
{
index = static_cast<int>(views.size()) - 1;
}
else if(index >= static_cast<int>(views.size()))
{
index = 0;
}
SetFocusedViewWithReason(views[index], kReasonFocusTraversal);
return false;
}
// Process keyboard accelerators.
// If the key combination matches an accelerator, the accelerator is
// triggered, otherwise the key event is processed as usual.
Accelerator accelerator(event.GetKeyCode(),
event.IsShiftDown(),
event.IsControlDown(),
event.IsAltDown());
if(ProcessAccelerator(accelerator))
{
// If a shortcut was activated for this keydown message, do not propagate
// the event further.
return false;
}
return true;
}