本文整理匯總了C#中Gtk.Menu.Detach方法的典型用法代碼示例。如果您正苦於以下問題：C# Menu.Detach方法的具體用法？C# Menu.Detach怎麽用？C# Menu.Detach使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類Gtk.Menu的用法示例。
在下文中一共展示了Menu.Detach方法的1個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的C#代碼示例。
示例1: ShowContextMenu
/// <summary>Shows a context menu.</summary>
/// <param name='menu'>The menu.</param>
/// <param name='parent'>The parent widget.</param>
/// <param name='evt'>The mouse event. May be null if triggered by keyboard.</param>
/// <param name='caret'>The caret/selection position within the parent, if the EventButton is null.</param>
public static void ShowContextMenu(Menu menu, Widget parent, Gdk.EventButton evt, Gdk.Rectangle caret)
{
MenuPositionFunc posFunc = null;
if (parent != null) {
menu.AttachToWidget (parent, null);
menu.Hidden += (sender, e) => {
if (menu.AttachWidget != null)
menu.Detach ();
};
posFunc = delegate (Menu m, out int x, out int y, out bool pushIn) {
Gdk.Window window = evt != null? evt.Window : parent.GdkWindow;
window.GetOrigin (out x, out y);
var alloc = parent.Allocation;
if (evt != null) {
x += (int) evt.X;
y += (int) evt.Y;
} else if (caret.X >= alloc.X && caret.Y >= alloc.Y) {
x += caret.X;
y += caret.Y + caret.Height;
} else {
x += alloc.X;
y += alloc.Y;
}
Requisition request = m.SizeRequest ();
var screen = parent.Screen;
Gdk.Rectangle geometry = screen.GetMonitorGeometry(screen.GetMonitorAtPoint (x, y));
//whether to push or flip menus that would extend offscreen
//FIXME: this is the correct behaviour for mac, check other platforms
bool flip_left = true;
bool flip_up = false;
if (x + request.Width > geometry.X + geometry.Width) {
if (flip_left) {
x -= request.Width;
} else {
x = geometry.X + geometry.Width - request.Width;
}
if (x < geometry.Left)
x = geometry.Left;
}
if (y + request.Height > geometry.Y + geometry.Height) {
if (flip_up) {
y -= request.Height;
} else {
y = geometry.Y + geometry.Height - request.Height;
}
if (y < geometry.Top)
y = geometry.Top;
}
pushIn = false;
};
}
uint time;
uint button;
if (evt == null) {
time = Global.CurrentEventTime;
button = 0;
} else {
time = evt.Time;
button = evt.Button;
}
//HACK: work around GTK menu issues on mac when passing button to menu.Popup
//some menus appear and immediately hide, and submenus don't activate
// if (Platform.IsMac) {
// button = 0;
// }
menu.Popup (null, null, posFunc, button, time);
}