我有一个无标题的窗口，因为我想创建一个自己的窗口样式。
标题和最小化，最大化和关闭按钮位于停靠面板中。我添加了以下事件处理程序来最大化，恢复和拖动窗口。
当窗口最大化时出现问题。
我发现只要我单击标题就会恢复。如果双击或拖动它我只想恢复它。我可以看出它为什么会发生，但不确定如何解决这个问题。
public void TITLEBAR_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
DockPanel dp = (DockPanel)sender;
Window parentWindow = Window.GetWindow(dp);
bool doubleClick = IsDoubleClick(sender, e);
if (e.ChangedButton == MouseButton.Left && e.LeftButton == MouseButtonState.Pressed && !doubleClick)
{
if (parentWindow.WindowState == WindowState.Maximized)
{
double mouseX = e.GetPosition(parentWindow).X;
double width = parentWindow.RestoreBounds.Width;
System.Drawing.Rectangle screenBounds = getCurrentScreenBounds(parentWindow);
double x = screenBounds.Left + (mouseX - ((width / 100.00) * ((100.00 / screenBounds.Width) * mouseX)));
if (x < 0)
{
x = 0;
}
else
{
if (x + width > screenBounds.Left + screenBounds.Width)
{
x = screenBounds.Left + screenBounds.Width - width;
}
}
parentWindow.Left = x;
parentWindow.Top = screenBounds.Top;
parentWindow.WindowState = System.Windows.WindowState.Normal;
}
parentWindow.DragMove();
//MessageBox.Show("");
}
if (doubleClick)
{
if (parentWindow.WindowState == System.Windows.WindowState.Maximized)
{
parentWindow.WindowState = System.Windows.WindowState.Normal;
}
else
{
parentWindow.WindowState = System.Windows.WindowState.Maximized;
}
}
}
与这堂课一起：
public static class MouseButtonHelper
{
private const long k_DoubleClickSpeed = 500;
private const double k_MaxMoveDistance = 10;
private static long _LastClickTicks = 0;
private static System.Windows.Point _LastPosition;
private static WeakReference _LastSender;
public static bool IsDoubleClick(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
System.Windows.Point position = e.GetPosition(null);
long clickTicks = DateTime.Now.Ticks;
long elapsedTicks = clickTicks - _LastClickTicks;
long elapsedTime = elapsedTicks / TimeSpan.TicksPerMillisecond;
bool quickClick = (elapsedTime <= k_DoubleClickSpeed);
bool senderMatch = (_LastSender != null && sender.Equals(_LastSender.Target));
if (senderMatch && quickClick && position.Distance(_LastPosition) <= k_MaxMoveDistance)
{
// Double click!
_LastClickTicks = 0;
_LastSender = null;
return true;
}
// Not a double click
_LastClickTicks = clickTicks;
_LastPosition = position;
if (!quickClick)
_LastSender = new WeakReference(sender);
return false;
}
private static double Distance(this System.Windows.Point pointA, System.Windows.Point pointB)
{
double x = pointA.X - pointB.X;
double y = pointA.Y - pointB.Y;
return Math.Sqrt(x * x + y * y);
}
}
这可以解决当前屏幕的界限。
public static class WindowHelper
{
public static System.Drawing.Rectangle getCurrentScreenBounds(System.Windows.Window pWnd)
{
System.Windows.Forms.Screen parentScreen = GetCurrentScreen(pWnd);
if (parentScreen == null)
{
return System.Windows.Forms.Screen.PrimaryScreen.Bounds;
}
return parentScreen.Bounds;
}
private static System.Windows.Forms.Screen GetCurrentScreen(System.Windows.Window pWnd)
{
System.Drawing.Rectangle intersectingRect = new System.Drawing.Rectangle();
System.Drawing.Rectangle windowRect = new System.Drawing.Rectangle(Convert.ToInt32(pWnd.Left), Convert.ToInt32(pWnd.Top), Convert.ToInt32(pWnd.Width), Convert.ToInt32(pWnd.Height));
int largestIntersectingArea = 0;
System.Windows.Forms.Screen curScreen = null;
foreach (System.Windows.Forms.Screen s in System.Windows.Forms.Screen.AllScreens)
{
if (s.Bounds.IntersectsWith(windowRect))
{
intersectingRect = System.Drawing.Rectangle.Intersect(s.Bounds, windowRect);
int intersectingArea = intersectingRect.Width * intersectingRect.Height;
if (intersectingArea > largestIntersectingArea)
{
largestIntersectingArea = intersectingArea;
curScreen = s;
}
}
}
return curScreen;
}
}
答案 0 :(得分：3)
有一个名为Thumb的WPF元素（控件），我用它来制作可拖动的部分。它有一个DragDelta事件，您可以用它来检查可拖动部分的HorizontalOffset和VerticalOffset。您可以保存以前的值并检查新值是相同还是更改;这意味着它被拖了。
（只是一个对我有用的建议）。
答案 1 :(得分：1)
好的，也许有人会觉得这很有帮助。
我改变了一些东西，以便在MouseMove和MouseLeftButtonDown事件中识别两个事件的拖拽。
MouseLeftButtonDown在setStartPosition（）中捕获拖动的可能起始位置。
public void TITLEBAR_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
DockPanel dp = (DockPanel)sender;
Window parentWindow = Window.GetWindow(dp);
doubleClick = IsDoubleClick(sender, e);
if (e.ChangedButton == MouseButton.Left && e.LeftButton == MouseButtonState.Pressed && !doubleClick)
{
if (parentWindow.WindowState == WindowState.Maximized)
{
setStartPosition(sender, e);
}
}
if (doubleClick)
{
if (parentWindow.WindowState == System.Windows.WindowState.Maximized)
{
parentWindow.WindowState = System.Windows.WindowState.Normal;
}
else
{
parentWindow.WindowState = System.Windows.WindowState.Maximized;
}
}
}
private void TITLEBAR_MouseMove(object sender, MouseEventArgs e)
{
DockPanel dp = (DockPanel)sender;
Window parentWindow = Window.GetWindow(dp);
if (e.LeftButton == MouseButtonState.Pressed)
{
if (IsDragging(sender, e) && !doubleClick)
{
if (parentWindow.WindowState == WindowState.Maximized)
{
double mouseX = e.GetPosition(parentWindow).X;
double width = parentWindow.RestoreBounds.Width;
System.Drawing.Rectangle screenBounds = getCurrentScreenBounds(parentWindow);
double x = screenBounds.Left + (mouseX - ((width / 100.00) * ((100.00 / screenBounds.Width) * mouseX)));
if (x < 0)
{
x = 0;
}
else
{
if (x + width > screenBounds.Left + screenBounds.Width)
{
x = screenBounds.Left + screenBounds.Width - width;
}
}
parentWindow.Left = x;
parentWindow.Top = screenBounds.Top;
parentWindow.WindowState = System.Windows.WindowState.Normal;
}
parentWindow.DragMove();
}
}
}
以下是修改后的类：
public static class MouseButtonHelper
{
private const long k_DoubleClickSpeed = 500;
private const double k_MaxMoveDistance = 10;
private static long _LastClickTicks = 0;
private static System.Windows.Point _LastPosition;
private static WeakReference _LastSender;
private static System.Windows.Point _DragStartPosition;
public static bool IsDoubleClick(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
System.Windows.Point position = e.GetPosition(null);
long clickTicks = DateTime.Now.Ticks;
long elapsedTicks = clickTicks - _LastClickTicks;
long elapsedTime = elapsedTicks / TimeSpan.TicksPerMillisecond;
bool quickClick = (elapsedTime <= k_DoubleClickSpeed);
bool senderMatch = (_LastSender != null && sender.Equals(_LastSender.Target));
if (senderMatch && quickClick && position.Distance(_LastPosition) <= k_MaxMoveDistance)
{
// Double click!
_LastClickTicks = 0;
_LastSender = null;
return true;
}
// Not a double click
_LastClickTicks = clickTicks;
_LastPosition = position;
if (!quickClick)
_LastSender = new WeakReference(sender);
return false;
}
public static void setStartPosition(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
_DragStartPosition = e.GetPosition(null);
}
public static bool IsDragging(object sender, System.Windows.Input.MouseEventArgs e)
{
System.Windows.Point mousePos = e.GetPosition(null);
System.Windows.Vector diff = _DragStartPosition - mousePos;
if (Math.Abs(diff.X) > System.Windows.SystemParameters.MinimumHorizontalDragDistance || Math.Abs(diff.Y) > System.Windows.SystemParameters.MinimumVerticalDragDistance)
{
return true;
}
return false;
}
private static double Distance(this System.Windows.Point pointA, System.Windows.Point pointB)
{
double x = pointA.X - pointB.X;
double y = pointA.Y - pointB.Y;
return Math.Sqrt(x * x + y * y);
}
}