我制作了一个简单的appBar，屏幕顶部只有一个标签，缩小了桌面，但我无法让它成为我的第二台显示器。我一直在寻找，但我发现的一切都是为了WPF。这些很可能是我犯了错误的地方，但如果还有其他代码需要查看，请告诉我。
private void InitializeComponent()
{
this.ClientSize = new System.Drawing.Size(SystemInformation.WorkingArea.Width, -1);
this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedToolWindow;
this.Name = "MainForm";
this.Text = "AppBar";
this.Closing += new System.ComponentModel.CancelEventHandler(this.OnClosing);
this.Load += new System.EventHandler(this.OnLoad);
this.BackColor = Color.Green;
this.Padding = new Padding(0, 0, 0, 0);
Label label1 = new Label();
label1.Text = "TEXT";
label1.Width = 270;
label1.Margin = new Padding(0,0,0,0);
label1.Padding = new Padding(0,0,0,0);
label1.TextAlign = ContentAlignment.MiddleCenter;
label1.ForeColor = Color.White;
label1.Font = new Font(FontFamily.GenericSansSerif, 12,FontStyle.Regular);
label1.Location = new Point((SystemInformation.WorkingArea.Width - 270) / 2, 0);
this.Controls.Add(label1);
}
private void ABSetPos()
{
APPBARDATA abd = new APPBARDATA();
abd.cbSize = Marshal.SizeOf(abd);
abd.hWnd = this.Handle;
abd.uEdge = (int)ABEdge.ABE_TOP;
if (abd.uEdge == (int)ABEdge.ABE_LEFT || abd.uEdge == (int)ABEdge.ABE_RIGHT)
{
abd.rc.top = 0;
abd.rc.bottom = SystemInformation.PrimaryMonitorSize.Height;
if (abd.uEdge == (int)ABEdge.ABE_LEFT)
{
abd.rc.left = 0;
abd.rc.right = Size.Width;
}
else
{
abd.rc.right = SystemInformation.PrimaryMonitorSize.Width;
abd.rc.left = abd.rc.right - Size.Width;
}
}
else
{
abd.rc.left = 0;
abd.rc.right = SystemInformation.PrimaryMonitorSize.Width;
if (abd.uEdge == (int)ABEdge.ABE_TOP)
{
abd.rc.top = 0;
abd.rc.bottom = Size.Height;
}
else
{
abd.rc.bottom = SystemInformation.PrimaryMonitorSize.Height;
abd.rc.top = abd.rc.bottom - Size.Height;
}
}
答案 0 :(得分：2)
您可以通过迭代Screen.AllScreens数组来使用不同的屏幕。例如，以下是获得第一个非主要监视器的方法：
Screen nonPrimaryScreen = Screen.AllScreens.FirstOrDefault(x => !x.Primary);
然后，在您使用SystemInformation.WorkingArea（始终使用主屏幕）的任何地方，您都可以使用：
nonPrimaryScreen.WorkingArea
当然假设nonPrimaryScreen != null。
编辑：
而不是复制代码，使其更通用：
public static Rectangle GetWorkingArea() {
if (UseWantsItOnPrimaryScreen) {
return SystemInformation.WorkingArea;
}
else {
return Screen.AllScreens.FirstOrDefault(x => !x.Primary).WorkingArea;
}
}
答案 1 :(得分：1)
#region APPBAR
[StructLayout(LayoutKind.Sequential)]
struct RECT
{
public int left;
public int top;
public int right;
public int bottom;
}
[StructLayout(LayoutKind.Sequential)]
struct APPBARDATA
{
public int cbSize;
public IntPtr hWnd;
public int uCallbackMessage;
public int uEdge;
public RECT rc;
public IntPtr lParam;
}
enum ABMsg : int
{
ABM_NEW = 0,
ABM_REMOVE = 1,
ABM_QUERYPOS = 2,
ABM_SETPOS = 3,
ABM_GETSTATE = 4,
ABM_GETTASKBARPOS = 5,
ABM_ACTIVATE = 6,
ABM_GETAUTOHIDEBAR = 7,
ABM_SETAUTOHIDEBAR = 8,
ABM_WINDOWPOSCHANGED = 9,
ABM_SETSTATE = 10
}
enum ABNotify : int
{
ABN_STATECHANGE = 0,
ABN_POSCHANGED,
ABN_FULLSCREENAPP,
ABN_WINDOWARRANGE
}
enum ABEdge : int
{
ABE_LEFT = 0,
ABE_TOP,
ABE_RIGHT,
ABE_BOTTOM
}
private bool fBarRegistered = false;
[DllImport("SHELL32", CallingConvention = CallingConvention.StdCall)]
static extern uint SHAppBarMessage(int dwMessage, ref APPBARDATA pData);
[DllImport("USER32")]
static extern int GetSystemMetrics(int Index);
[DllImport("User32.dll", ExactSpelling = true,
CharSet = System.Runtime.InteropServices.CharSet.Auto)]
private static extern bool MoveWindow
(IntPtr hWnd, int x, int y, int cx, int cy, bool repaint);
[DllImport("User32.dll", CharSet = CharSet.Auto)]
private static extern int RegisterWindowMessage(string msg);
private int uCallBack;
private void RegisterBar()
{
APPBARDATA abd = new APPBARDATA();
abd.cbSize = Marshal.SizeOf(abd);
abd.hWnd = this.Handle;
if (!fBarRegistered)
{
uCallBack = RegisterWindowMessage("AppBarMessage");
abd.uCallbackMessage = uCallBack;
uint ret = SHAppBarMessage((int)ABMsg.ABM_NEW, ref abd);
fBarRegistered = true;
ABSetPos();
}
else
{
SHAppBarMessage((int)ABMsg.ABM_REMOVE, ref abd);
fBarRegistered = false;
}
}
private void ABSetPos()
{
APPBARDATA abd = new APPBARDATA();
abd.cbSize = Marshal.SizeOf(abd);
abd.hWnd = this.Handle;
abd.uEdge = (int)ABEdge.ABE_TOP;
if (abd.uEdge == (int)ABEdge.ABE_LEFT || abd.uEdge == (int)ABEdge.ABE_RIGHT)
{
abd.rc.top = this.GetScreenObject(ScreenName).Bounds.Top; //0;
abd.rc.bottom = this.GetScreenObject(ScreenName).Bounds.Top + this.GetScreenObject(ScreenName).Bounds.Height; //SystemInformation.PrimaryMonitorSize.Height;
if (abd.uEdge == (int)ABEdge.ABE_LEFT)
{
abd.rc.left = this.GetScreenObject(ScreenName).Bounds.Left;//0;
abd.rc.right = Size.Width;
}
else
{
abd.rc.right = this.GetScreenObject(ScreenName).Bounds.Left + this.GetScreenObject(ScreenName).Bounds.Width; // SystemInformation.PrimaryMonitorSize.Width;
abd.rc.left = abd.rc.right - Size.Width;
}
}
else
{
abd.rc.left = this.GetScreenObject(ScreenName).Bounds.Left; //0;
abd.rc.right = this.GetScreenObject(ScreenName).Bounds.Left+this.GetScreenObject(ScreenName).Bounds.Width; //SystemInformation.PrimaryMonitorSize.Width;
if (abd.uEdge == (int)ABEdge.ABE_TOP)
{
abd.rc.top = this.GetScreenObject(ScreenName).Bounds.Top; //0 nebo -1080
abd.rc.bottom = Size.Height;
}
else
{
abd.rc.bottom = this.GetScreenObject(ScreenName).Bounds.Top + this.GetScreenObject(ScreenName).Bounds.Height; //SystemInformation.PrimaryMonitorSize.Height;
abd.rc.top = abd.rc.bottom - Size.Height;
}
}
// Query the system for an approved size and position.
SHAppBarMessage((int)ABMsg.ABM_QUERYPOS, ref abd);
// Adjust the rectangle, depending on the edge to which the
// appbar is anchored.
switch (abd.uEdge)
{
case (int)ABEdge.ABE_LEFT:
abd.rc.right = abd.rc.left + Size.Width;
break;
case (int)ABEdge.ABE_RIGHT:
abd.rc.left = abd.rc.right - Size.Width;
break;
case (int)ABEdge.ABE_TOP:
abd.rc.bottom = abd.rc.top + Size.Height;
break;
case (int)ABEdge.ABE_BOTTOM:
abd.rc.top = abd.rc.bottom - Size.Height;
break;
}
// Pass the final bounding rectangle to the system.
SHAppBarMessage((int)ABMsg.ABM_SETPOS, ref abd);
// Move and size the appbar so that it conforms to the
// bounding rectangle passed to the system.
MoveWindow(abd.hWnd, abd.rc.left, abd.rc.top,
abd.rc.right - abd.rc.left, abd.rc.bottom - abd.rc.top, true);
}
protected override void WndProc(ref System.Windows.Forms.Message m)
{
if (m.Msg == uCallBack)
{
switch (m.WParam.ToInt32())
{
case (int)ABNotify.ABN_POSCHANGED:
ABSetPos();
break;
}
}
try
{
base.WndProc(ref m);
}
catch (Exception E) { }
}
protected override System.Windows.Forms.CreateParams CreateParams
{
get
{
CreateParams cp = base.CreateParams;
cp.Style &= (~0x00C00000); // WS_CAPTION
cp.Style &= (~0x00800000); // WS_BORDER
//cp.ExStyle = 0x00000080 | 0x00000008 | 0x20; // WS_EX_TOOLWINDOW | WS_EX_TOPMOST
//cp.ExStyle &= 0x20;
cp.ExStyle |= 0x00000008 | 0x00000080;
//cp.ExStyle &= 0x00000080 ; // WS_EX_TOOLWINDOW | WS_EX_TOPMOST
return cp;
}
}
private void OnLoad(object sender, System.EventArgs e)
{
RegisterBar();
}
private void OnClosing(object sender, System.ComponentModel.CancelEventArgs e)
{
RegisterBar();
}
#endregion
答案 2 :(得分：1)
private Screen GetScreenObject(String Name)
{
logger.Info(GlobalModulename + "@ ScreenList::looking for screen:"+Name);
if ((Name == "Primary"))
{
bool ExpectedParameter = true;
foreach (var screen in Screen.AllScreens)
{
// For each screen, add the screen properties to a list box.
logger.Info(GlobalModulename + "@ ScreenList::("+screen.DeviceName.ToString()+")Primary Screen: " + screen.Primary.ToString());
if (screen.Primary==ExpectedParameter)
{
return screen;
}
}
}
if ((Name == "Secondary"))
{
bool ExpectedParameter = false;
foreach (var screen in Screen.AllScreens)
{
// For each screen, add the screen properties to a list box.
logger.Info(GlobalModulename + "@ ScreenList::(" + screen.DeviceName.ToString() + ")Primary Screen: " + screen.Primary.ToString());
if (screen.Primary == ExpectedParameter)
{
return screen;
}
}
}
// konkretni jmeno obrazovky tak jak je to v systemu
try
{
foreach (var screen in Screen.AllScreens)
{
// For each screen, add the screen properties to a list box.
logger.Info("UEFA_Core @ ScreenList::Device Name: " + screen.DeviceName);
logger.Info("UEFA_Core @ ScreenList::Bounds: " + screen.Bounds.ToString());
logger.Info("UEFA_Core @ ScreenList::Type: " + screen.GetType().ToString());
logger.Info("UEFA_Core @ ScreenList::Working Area: " + screen.WorkingArea.ToString());
logger.Info("UEFA_Core @ ScreenList::Primary Screen: " + screen.Primary.ToString());
if (screen.DeviceName == Name) return screen;
}
}
catch { }
// podobne jmeno obrazovky tak jak je to v systemu
try
{
foreach (var screen in Screen.AllScreens)
{
// For each screen, add the screen properties to a list box.
logger.Info("UEFA_Core @ ScreenList::Device Name: " + screen.DeviceName);
logger.Info("UEFA_Core @ ScreenList::Bounds: " + screen.Bounds.ToString());
logger.Info("UEFA_Core @ ScreenList::Type: " + screen.GetType().ToString());
logger.Info("UEFA_Core @ ScreenList::Working Area: " + screen.WorkingArea.ToString());
logger.Info("UEFA_Core @ ScreenList::Primary Screen: " + screen.Primary.ToString());
if (screen.DeviceName.Contains(Name)) return screen;
}
}
catch { }
logger.Info("UEFA_Core @ ScreenList::No screen found by name");
return Screen.PrimaryScreen;
}
答案 3 :(得分：0)
您可以计算正确的公式，以将AppBar移至第二台显示器，而无需使用PrimaryMonitorSize以外的任何东西。例如，对于第二台显示器上的左侧AppBar，您可以使用以下代码：
if (abd.uEdge == (int)ABEdge.ABE_LEFT)
{
abd.rc.left = SystemInformation.PrimaryMonitorSize.Width;
abd.rc.right = SystemInformation.PrimaryMonitorSize.Width + Size.Width;
}