子表單為什么不與父表單出現在同一屏幕上？

Question

更新資料

我接受了Rufus L的幾個mod的答案，相關代碼如下

public partial class ClsOfficeRibbonFooTab
{

    private void FooTab_Load(object sender, RibbonUIEventArgs e)
    {
         .
         .
         .
    }

    private void CheckResolution()
    {
        // set the left position so that the expanded version of the form fits on the screen
        Screen screen = Screen.FromHandle(new IntPtr(Globals.ThisAddIn.Application.ActiveWindow.Hwnd));

        if (screen.Bounds.Width < 1360 || screen.Bounds.Height < 768)
        {
            throw new FormatException(String.Format("The {0} is supported on screens with a resolution of 1360 by 768 or greater. Your screen is {1} by {2}", "Some caption text", screen.Bounds.Width, screen.Bounds.Height));
        }
    }

    private void ObjButtonFoo_Click(object sender, RibbonControlEventArgs e)
    {
        using (ClsFormFoo objFormFoo = new ClsFormFoo(parentWindow: Globals.ThisAddIn.Application.ActiveWindow))
        {
            CheckResolution();
            objFormFoo.ShowDialog();
        }
    }
}

public partial class ClsFormFoo : Form
{
    // This form is a fixed dialog with a flyout on the right side. 
    // expandedWidth is a const set to the max width of this fixed dialog (i.e., the dialog with the flyout extended)
    const int expandedWidth = 1345;

    public ClsFormFoo(Microsoft.Office.Interop.Word.Window parentWindow)
    {
        InitializeComponent();
        Top = parentWindow.Top;
    }

    private void ClsFormFoo_Load(object sender, EventArgs e)
    {
        Screen screen = Screen.FromHandle(new IntPtr(Globals.ThisAddIn.Application.ActiveWindow.Hwnd));

        // set the left position so that the expanded version of the form fits on the screen for all legal resolutions
        int halfScreenWidth = (int)(screen.WorkingArea.Width / 2);
        // This form is a fixed dialog with a flyout on the right side. 
        // expandedWidth is a const set to the max width of this fixed dialog (i.e., the dialog with the flyout extended)
        int halfFormWidth = (int)(expandedWidth / 2);
        this.Left = screen.Bounds.Left + ((int)(halfScreenWidth - halfFormWidth));
    }
}

原始帖子

我的VSTO Add-In提供一個功能區按鈕，當單擊該功能區按鈕時，將調用ObjButtonFoo_Click ，該按鈕又顯示一個ClsFormFoo表單（請參見下面的代碼 ）。 ObjButtonFoo_Click包含用於創建代表Word的IWin32Window所有者值的代碼，以傳遞給ShowDialog。

在多監視器設置中，我希望objFormFoo會出現在顯示Word本身的同一監視器上。 然而，當我打開Word中的輔助監視器上，並導致ObjButtonFoo_Click執行， objFormFoo出現在主顯示器上

如何使objFormFoo出現在與Word本身顯示在同一監視器上的監視器上， objFormFoo是否是主監視器？

注意：我驗證了winWordMain是否已填充，即它不是null。 請參閱下面的winWordMain

碼

private void ObjButtonFoo_Click(object sender, RibbonControlEventArgs e)
{
    NativeWindow winWordMain = new NativeWindow();
    winWordMain.AssignHandle(new IntPtr(Globals.ThisAddIn.Application.ActiveWindow.Hwnd));
    IntPtr(Globals.ThisAddIn.Application.ActiveWindow.Hwnd);

    using (ClsFormFoo objFormFoo = new ClsFormFoo()
    {
        objFormFoo.ShowDialog(winWordMain);
    }

    winWordMain.ReleaseHandle();
}

winWordMain

Answer 1

我沒有VSTO對此進行測試，但是在我看來，您可以直接獲取要用作父級的ActiveWindow的位置，然后將其用作放置子窗體的參考：

private void allRootsWithChilds_CheckedChanged(object sender, EventArgs e)
{
    var winWordMain = new NativeWindow();
    var parent = Globals.ThisAddIn.Application.ActiveWindow;
    winWordMain.AssignHandle(new IntPtr(parent.Hwnd));

    using (var objFormFoo = new ClsFormFoo())
    {
        // Set the Left and Top properties so this form is centered over the parent
        objFormFoo.Left = parent.Left + (parent.Width - objFormFoo.Width) / 2;
        objFormFoo.Top = parent.Top + (parent.Height - objFormFoo.Height) / 2;

        objFormFoo.ShowDialog(winWordMain);
    }

    winWordMain.ReleaseHandle();
}

Answer 2

我曾經在C＃上制作了一個簡單的屏幕保護程序。 我使用以下代碼在所需的屏幕或所有屏幕上打開了屏幕保護程序。

您必須從所需的屏幕取bounds ，並將其傳遞給表單。

// Constructor
public NameForm(Rectangle bounds)
{
    InitializeComponent();

    this.Bounds = bounds;
}

// In my case, this is opening the screensaver on all screens
foreach (Screen screen in Screen.AllScreens)
{
    NameForm form = new NameForm (screen.Bounds);
    form.Show();
}

Answer 3

您只需要將表單的StartPosition屬性設置為FormStartPosition.CenterParent值：

loginForm.StartPosition = FormStartPosition.CenterParent;
loginForm.ShowDialog(parentWindowdle);