我需要知道最大化窗口的位置.
WPF窗口具有Top和Left属性,用于指定窗口的位置.但是,如果最大化窗口,这些属性会使窗口的值保持正常状态.
如果您在单屏设置上运行,则最大化位置自然是(0,0).但是,如果您有多个屏幕不一定是真的.如果在主屏幕上最大化窗口,窗口将只有位置(0,0).
那么......有没有办法找出最大化窗口的位置(最好是与Top和Left属性相同的逻辑单元)?
tgr*_*r42 10
这是我根据之前的讨论提出的解决方案(谢谢!).
这解决方案......
GetAbsolutePosition这里实现的主要方法是扩展方法.如果你有一个Window被叫myWindow,请这样称呼它:
Point p = myWindow.GetAbsolutePosition();
Run Code Online (Sandbox Code Playgroud)
这是完整的代码:
using System;
using System.Windows;
using System.Windows.Interop;
using System.Runtime.InteropServices;
static class OSInterop
{
[DllImport("user32.dll")]
public static extern int GetSystemMetrics(int smIndex);
public const int SM_CMONITORS = 80;
[DllImport("user32.dll")]
public static extern bool SystemParametersInfo(int nAction, int nParam, ref RECT rc, int nUpdate);
[DllImport("user32.dll", CharSet = CharSet.Auto)]
public static extern bool GetMonitorInfo(HandleRef hmonitor, [In, Out] MONITORINFOEX info);
[DllImport("user32.dll")]
public static extern IntPtr MonitorFromWindow(HandleRef handle, int flags);
public struct RECT
{
public int left;
public int top;
public int right;
public int bottom;
public int width { get { return right - left; } }
public int height { get { return bottom - top; } }
}
[StructLayout(LayoutKind.Sequential, Pack = 4, CharSet = CharSet.Auto)]
public class MONITORINFOEX
{
public int cbSize = Marshal.SizeOf(typeof(MONITORINFOEX));
public RECT rcMonitor = new RECT();
public RECT rcWork = new RECT();
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)]
public char[] szDevice = new char[32];
public int dwFlags;
}
}
static class WPFExtensionMethods
{
public static Point GetAbsolutePosition(this Window w)
{
if (w.WindowState != WindowState.Maximized)
return new Point(w.Left, w.Top);
Int32Rect r;
bool multimonSupported = OSInterop.GetSystemMetrics(OSInterop.SM_CMONITORS) != 0;
if (!multimonSupported)
{
OSInterop.RECT rc = new OSInterop.RECT();
OSInterop.SystemParametersInfo(48, 0, ref rc, 0);
r = new Int32Rect(rc.left, rc.top, rc.width, rc.height);
}
else
{
WindowInteropHelper helper = new WindowInteropHelper(w);
IntPtr hmonitor = OSInterop.MonitorFromWindow(new HandleRef((object)null, helper.EnsureHandle()), 2);
OSInterop.MONITORINFOEX info = new OSInterop.MONITORINFOEX();
OSInterop.GetMonitorInfo(new HandleRef((object)null, hmonitor), info);
r = new Int32Rect(info.rcWork.left, info.rcWork.top, info.rcWork.width, info.rcWork.height);
}
return new Point(r.X, r.Y);
}
}
Run Code Online (Sandbox Code Playgroud)
我终于找到了一个适合我的解决方案:
private System.Drawing.Rectangle getWindowRectangle()
{
System.Drawing.Rectangle windowRectangle;
if (this.WindowState == System.Windows.WindowState.Maximized)
{
/* Here is the magic:
* Use Winforms code to find the Available space on the
* screen that contained the window
* just before it was maximized
* (Left, Top have their values from Normal WindowState)
*/
windowRectangle = System.Windows.Forms.Screen.GetWorkingArea(
new System.Drawing.Point((int)this.Left, (int)this.Top));
}
else
{
windowRectangle = new System.Drawing.Rectangle(
(int)this.Left, (int)this.Top,
(int)this.ActualWidth, (int)this.ActualHeight);
}
return windowRectangle;
}
Run Code Online (Sandbox Code Playgroud)
public static System.Drawing.Rectangle GetWindowRectangle(this Window w)
{
if (w.WindowState == WindowState.Maximized) {
var handle = new System.Windows.Interop.WindowInteropHelper(w).Handle;
var screen = System.Windows.Forms.Screen.FromHandle(handle);
return screen.WorkingArea;
}
else {
return new System.Drawing.Rectangle(
(int)w.Left, (int)w.Top,
(int)w.ActualWidth, (int)w.ActualHeight);
}
}
Run Code Online (Sandbox Code Playgroud)
通用的一线应答适用于所有显示器和所有高DPI变体:
Point leftTop = this.PointToScreen(new Point(0, 0));
Run Code Online (Sandbox Code Playgroud)
例如,这返回(-8,-8)窗口,该窗口在1920宽屏幕上最大化,其ActualWidth返回1936.
只是一个夸夸其谈的其他答案:千万别把逻辑96个dpi的WPF像素(使用double)与本地实际像素(使用int) -特别是刚刚铸造双为int!
我知道您正在使用 WPF,并且这个答案使用了表单技术,但它应该没有太大困难。
您可以通过 My.Settings.Screens.AllScreens 获取屏幕的集合。从那里您可以访问屏幕当前正在使用的分辨率。
由于 WPF 窗口保留最大化时的上/左值,因此您可以通过确定上/左坐标引用的屏幕来确定它们位于哪个屏幕上,然后获取该屏幕的上/左坐标。
不幸的是,我正在路上,目前无法对此进行测试。如果你真的实施了,我很想看看你能想出什么。