像标题一样,我希望WPF在2个监视器上最大化(现在我的电脑上有2个监视器)。
我设置
this.Width = System.Windows.Forms.Screen.AllScreens[0].Bounds.Width + System.Windows.Forms.Screen.AllScreens[1].Bounds.Width
但它不完整,像图像一样间隔开。
我希望用户单击最大化按钮,然后窗口最大化2个监视器。
有人知道吗?
谢谢你们!
附注:对不起,我的英语不好。
参考方案
您需要找到点Left,Top,Height,Width,并将其直接设置为要最大化的窗口
MonitorFromPoint
MonitorFromRect
MonitorFromWindow
为了完整起见,我首先介绍一种幼稚的方法,如何在指定的监视器上最大化窗口。
void Maximize(HWND hWnd, HMONITOR hMonitor)
{
// access monitor info
MONITORINFO monitorInfo = { sizeof(MONITORINFO) };
GetMonitorInfo(hMonitor, &monitorInfo);
// restore window to normal size if it is not yet
ShowWindow(hWnd, SW_RESTORE);
// move window to the monitor
SetWindowPos(hWnd, nullptr, monitorInfo.rcMonitor.left,
monitorInfo.rcMonitor.top, 0, 0, SWP_NOZORDER | SWP_NOSIZE);
// maximize window
ShowWindow(hWnd, SW_MAXIMIZE);
}
如果在相同的输入窗口和相同的目标监视器上多次调用函数,则闪烁会更加明显。当然,有人可能会争辩说,有可能获得窗口的当前状态而避免调用该函数(或者,如果检测到该状态已经正确,则可以在函数中提前返回)。但是,这样的处理只会增加功能的复杂性。我在想是否无法仅隐藏窗口并以某种方式在后台执行状态恢复,而仅在最后显示窗口。但是尝试注入一些SetRender(hWnd,FALSE)或ShowWindow(SW_HIDE)调用只会使输出更糟。经过一些测试,我发现更改最大化/普通窗口仅改变了窗口样式中的一位(WS_MAXIMIZE),最后,使用此信息,我得到了最终的好解决方案:
void Maximize(HWND hWnd, HMONITOR hMonitor)
{
// access monitor info
MONITORINFO monitorInfo = { sizeof(MONITORINFO) };
GetMonitorInfo(hMonitor, &monitorInfo);
const LONG currStyles = GetWindowLong(hWnd, GWL_STYLE);
SetWindowLong(hWnd, GWL_STYLE, currStyles | WS_MAXIMIZE);
const auto rc = monitorInfo.rcMonitor;
SetWindowPos(&CWnd::wndTop, rc.left, rc.top, rc.Width(), rc.Height(), 0);
}
就是这样。该功能按预期工作,即使被多次调用,也不会闪烁。通过从窗口样式中删除WS_MAXIMIZE并使用正确的矩形信息调用SetWindowPos,可以轻松更改该函数以将窗口恢复为正常大小。
[DllImport("User32.dll")]
private static extern IntPtr MonitorFromPoint([In]System.Drawing.Point pt, [In]uint dwFlags);
//https://msdn.microsoft.com/en-us/library/windows/desktop/dn280510(v=vs.85).aspx
[DllImport("Shcore.dll")]
private static extern IntPtr GetDpiForMonitor([In]IntPtr hmonitor, [In]DpiType dpiType, [Out]out uint dpiX, [Out]out uint dpiY);
public enum DpiType
{
Effective = 0,
Angular = 1,
Raw = 2,
}
/// <summary>
/// POINT aka POINTAPI
/// </summary>
[StructLayout(LayoutKind.Sequential)]
public struct POINT
{
/// <summary>
/// x coordinate of point.
/// </summary>
public int x;
/// <summary>
/// y coordinate of point.
/// </summary>
public int y;
/// <summary>
/// Construct a point of coordinates (x,y).
/// </summary>
public POINT(int x, int y)
{
this.x = x;
this.y = y;
}
}
[StructLayout(LayoutKind.Sequential)]
public struct MINMAXINFO
{
public POINT ptReserved;
public POINT ptMaxSize;
public POINT ptMaxPosition;
public POINT ptMinTrackSize;
public POINT ptMaxTrackSize;
};
/// <summary>
/// </summary>
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
public class MONITORINFO
{
/// <summary>
/// </summary>
public int cbSize = Marshal.SizeOf(typeof(MONITORINFO));
/// <summary>
/// </summary>
public RECT rcMonitor = new RECT();
/// <summary>
/// </summary>
public RECT rcWork = new RECT();
/// <summary>
/// </summary>
public int dwFlags = 0;
}
/// <summary> Win32 </summary>
[StructLayout(LayoutKind.Sequential, Pack = 0)]
public struct RECT
{
/// <summary> Win32 </summary>
public int left;
/// <summary> Win32 </summary>
public int top;
/// <summary> Win32 </summary>
public int right;
/// <summary> Win32 </summary>
public int bottom;
/// <summary> Win32 </summary>
public static readonly RECT Empty = new RECT();
/// <summary> Win32 </summary>
public int Width
{
get { return Math.Abs(right - left); } // Abs needed for BIDI OS
}
/// <summary> Win32 </summary>
public int Height
{
get { return bottom - top; }
}
/// <summary> Win32 </summary>
public RECT(int left, int top, int right, int bottom)
{
this.left = left;
this.top = top;
this.right = right;
this.bottom = bottom;
}
/// <summary> Win32 </summary>
public RECT(RECT rcSrc)
{
this.left = rcSrc.left;
this.top = rcSrc.top;
this.right = rcSrc.right;
this.bottom = rcSrc.bottom;
}
/// <summary> Win32 </summary>
public bool IsEmpty
{
get
{
// BUGBUG : On Bidi OS (hebrew arabic) left > right
return left >= right || top >= bottom;
}
}
/// <summary> Return a user friendly representation of this struct </summary>
public override string ToString()
{
if (this == RECT.Empty) { return "RECT {Empty}"; }
return "RECT { left : " + left + " / top : " + top + " / right : " + right + " / bottom : " + bottom + " }";
}
/// <summary> Determine if 2 RECT are equal (deep compare) </summary>
public override bool Equals(object obj)
{
if (!(obj is Rect)) { return false; }
return (this == (RECT)obj);
}
/// <summary>Return the HashCode for this struct (not garanteed to be unique)</summary>
public override int GetHashCode()
{
return left.GetHashCode() + top.GetHashCode() + right.GetHashCode() + bottom.GetHashCode();
}
/// <summary> Determine if 2 RECT are equal (deep compare)</summary>
public static bool operator ==(RECT rect1, RECT rect2)
{
return (rect1.left == rect2.left && rect1.top == rect2.top && rect1.right == rect2.right && rect1.bottom == rect2.bottom);
}
/// <summary> Determine if 2 RECT are different(deep compare)</summary>
public static bool operator !=(RECT rect1, RECT rect2)
{
return !(rect1 == rect2);
}
}
[DllImport("user32")]
internal static extern bool GetMonitorInfo(IntPtr hMonitor, MONITORINFO lpmi);
[DllImport("User32")]
internal static extern IntPtr MonitorFromWindow(IntPtr handle, int flags);
链接:-
http://msdn.microsoft.com/en-us/library/windows/desktop/dd145071%28v=vs.85%29.aspx
http://blogs.msdn.com/b/oldnewthing/archive/2010/04/12/9994016.aspx
This question already has answers here: Closed 7 years ago. Possible Duplicate: What does >> and >>> mean in Java?我在一些Java代码中遇到了一些陌生的符号,尽管代码可以正确编译和运行,但对于括号在此代码中的作用却感…
菱形运算符<>是否等于<?> - java我在util.TreeSet类中发现,其中一个构造函数正在使用具有空泛型类型的新TreeMap调用另一个构造函数。 public TreeSet(Comparator<? super E> comparator) { this(new TreeMap<>(comparator)); } new TreeMap<>是什么意思…
声纳测试用例失败 - java我正在尝试为我的项目之一获得声纳报告。我已经运行mvn clean installRunning blah.blah.BlahTest1 Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.016 sec Running blah.blah.BlahTest2 Tests run…
休眠映射<键,设置<值>> - java我有以下表格:@Entity @Table(name = "events") Event --id --name @Entity @Table(name = "state") State --id --name @Entity @Table(name = "action") Action --id …
如何使用BeautifulSoup在<tr>中捕获特定的<td> - python尝试从nyc Wiki页面中的高中列表中获取所有高中名称。我已经写了足够多的脚本,可以让我获取包含在高中,学业和入学条件列表的表的<tr>标记中的所有信息-但是我如何才能缩小到我认为的范围内在td[0]内休息(会弹出KeyError)-只是学校的名称?到目前为止我写的代码:from bs4 import BeautifulSoup from ur…