在C#中,启动画面有问题。是时候关闭并且出现主Form1,它移到Form1的右上角。然后消失。我以前从未发生过这种情况,并且几乎没有解决办法。我希望启动屏幕在中心屏幕中消失,而不要移到打开Form1的上角。这是代码:

public Form1() {
    Splash mySplash = new Splash();
    mySplash.TotalValue = 7; //or however many steps you must complete
    mySplash.Show();
    mySplash.Update();
    InitializeComponent();

    //--<begin>--------------
    this.Hide();
    this.WindowState = FormWindowState.Normal;
    mySplash.Progress++;
    printDoc.PrintPage += new PrintPageEventHandler(printDoc_PrintPage);
    printBOM.PrintPage += new PrintPageEventHandler(printBOM_PrintPage);
    printList.PrintPage += new PrintPageEventHandler(printList_PrintPage);
    mySplash.Progress++;

    // using old Kodak Imaging OCX !
    axImgEdit1.Image = "\\\\Netstore\\eng_share\\EView\\BOB-eView9.tif";
    axImgEdit1.DisplayScaleAlgorithm =
        ImgeditLibCtl.DisplayScaleConstants.wiScaleOptimize;
    axImgEdit1.FitTo(0);
    axImgEdit1.Display();
    mySplash.Progress++;

    //~~~~~~~~~~~~~~~~~~~~Getting printer info~~~~~~~~~~~~~~~~~~~~~~~~~

    List<Win32_Printer> printerList = Win32_Printer.GetList();
    int i = 0;
    foreach (Win32_Printer printer in printerList) {
        prnName = printer.Name;
        prnPort = printer.PortName;
        prnDriver = printer.DriverName;

        if (i == 0) {
            prnNameString = prnName;
            prnDriverString = prnDriver;
            prnPortString = prnPort;
        }

        else {
            prnNameString += "," + prnName;
            prnDriverString += "," + prnDriver;
            prnPortString += "," + prnPort;
        }

        i++;
    }

    mySplash.Progress++;
    EViewMethods.defaultPrn[0] = Settings.Default.DefaultPrinter; //defaultPrn[] is
    //string array holding the default printer name, driver and port

    EViewMethods.defaultPrn[1] = Settings.Default.DefaultPrinterDriver;
    EViewMethods.defaultPrn[2] = Settings.Default.DefaultPrinterPort;

    //making this printer the system default printer
    object printerName = Settings.Default.DefaultPrinter;
    ManagementObjectSearcher searcher = new ManagementObjectSearcher("SELECT * FROM
        Win32_Printer");
    ManagementObjectCollection collection = searcher.Get();

    foreach (ManagementObject currentObject in collection) {
        if (currentObject["name"].ToString() == printerName.ToString()) {
            currentObject.InvokeMethod("SetDefaultPrinter", new object[] { printerName
        });
    }
}

mySplash.Progress++;
EViewMethods.reCenterEVafterDwgClose = Settings.Default.ReCenterEVafterDwgClose;
if (Settings.Default.ReCenterEVafterDwgClose == true)
    recenterEViewAfterDrawingViewerClosesToolStripMenuItem.Checked = true;

else
    recenterEViewAfterDrawingViewerClosesToolStripMenuItem.Checked = false;

    //-------------------------------------------------------
    EViewMethods.screenBehavior = Settings.Default.ViewStyle;
    normalToolStripMenuItem.Checked = false;
    clearViewToolStripMenuItem.Checked = false;
    clearviewDULevLRToolStripMenuItem.Checked = false;
    clearviewdULevLLToolStripMenuItem.Checked = false;
    clearviewdURevULToolStripMenuItem.Checked = false;
    clearviewdURevLLToolStripMenuItem.Checked = false;
    clearviewdURevLRToolStripMenuItem.Checked = false;
    smallScreenToolStripMenuItem.Checked = false;

    switch (EViewMethods.screenBehavior) {
        case "Normal":
            normalToolStripMenuItem.Checked = true;
            Settings.Default.FormViewDwgLocation = new Point(0, 0);
            //Settings.Default.FormEviewLocation = new
            //Point(EViewMethods.form1CenterLeft, EViewMethods.form1CenterTop);
            Settings.Default.FormEviewLocation = new Point(588, 312);
            Settings.Default.FormECNLocation = new Point(EViewMethods.formECNLeft,
                EViewMethods.formECNTop);
            //EViewMethods.reCenterEVafterDwgClose = false;
            Form1.ActiveForm.SetDesktopLocation(588, 312);

        break;

        case "Clearview-dULevUR":
            clearViewToolStripMenuItem.Checked = true;
            Settings.Default.FormViewDwgLocation = new Point(0, 0);
            Settings.Default.FormEviewLocation = new Point(1180, 0);
            Settings.Default.FormECNLocation = new Point(EViewMethods.formECNLeft,
                EViewMethods.formECNTop);
            //EViewMethods.reCenterEVafterDwgClose = true;
            Form1.ActiveForm.SetDesktopLocation(588, 312);
        break;

        case "Clearview-dULevLR":
            clearviewDULevLRToolStripMenuItem.Checked = true;
            Settings.Default.FormViewDwgLocation = new Point(0, 0);
            Settings.Default.FormEviewLocation = new Point(1180, 622);
            Settings.Default.FormECNLocation = new Point(EViewMethods.formECNLeft,
                EViewMethods.formECNTop);
            //EViewMethods.reCenterEVafterDwgClose = true;
            Form1.ActiveForm.SetDesktopLocation(588, 312);
        break;

        case "Clearview-dULevLL":
            clearviewdULevLLToolStripMenuItem.Checked = true;
            Settings.Default.FormViewDwgLocation = new Point(0, 0);
            Settings.Default.FormEviewLocation = new Point(0, 622);
            Settings.Default.FormECNLocation = new Point(EViewMethods.formECNLeft,
                EViewMethods.formECNTop);
            //EViewMethods.reCenterEVafterDwgClose = true;
            Form1.ActiveForm.SetDesktopLocation(588, 312);
        break;

        case "Clearview-dURevUL":
            clearviewdURevULToolStripMenuItem.Checked = true;
            Settings.Default.FormViewDwgLocation = new Point(825, 0);
            Settings.Default.FormEviewLocation = new Point(0, 0);
            Settings.Default.FormECNLocation = new Point(EViewMethods.formECNLeft,
                EViewMethods.formECNTop);
            //EViewMethods.reCenterEVafterDwgClose = true;
            Form1.ActiveForm.SetDesktopLocation(588, 312);
        break;

        case "Clearview-dURevLL":
            clearviewdURevLLToolStripMenuItem.Checked = true;
            Settings.Default.FormViewDwgLocation = new Point(825, 0);
            Settings.Default.FormEviewLocation = new Point(0, 622);
            Settings.Default.FormECNLocation = new Point(EViewMethods.formECNLeft,
                EViewMethods.formECNTop);
            //EViewMethods.reCenterEVafterDwgClose = true;
                Form1.ActiveForm.SetDesktopLocation(588, 312);
        break;

        case "Clearview-dURevLR":
            clearviewdURevLRToolStripMenuItem.Checked = true;
            Settings.Default.FormViewDwgLocation = new Point(825, 0);
            Settings.Default.FormEviewLocation = new Point(1180, 622);
            Settings.Default.FormECNLocation = new Point(EViewMethods.formECNLeft,
                EViewMethods.formECNTop);
            //EViewMethods.reCenterEVafterDwgClose = true;
            Form1.ActiveForm.SetDesktopLocation(588, 312);
        break;

        case "Small-screen":
            //clearviewdURevLRToolStripMenuItem.Checked = true;
            smallScreenToolStripMenuItem.Checked = true;
            Settings.Default.FormViewDwgLocation = new Point(0, 0);
            Settings.Default.FormEviewLocation = new Point(0, 0);
            Settings.Default.FormECNLocation = new Point(0, 0);
            //EViewMethods.reCenterEVafterDwgClose = true;
            Form1.ActiveForm.SetDesktopLocation(588, 312);
        break;
    }

    //Form1.ActiveForm.SetDesktopLocation(588, 312); //all screen behavior mode will
    //begin centered on the screen
    EViewMethods.eviewUserPrefLocation = Settings.Default.FormEviewLocation;
    //-------------------------------------------------------

    EViewMethods.syncListToDwgNum = Settings.Default.SyncListDwgNum;

    if (EViewMethods.syncListToDwgNum == true)
        synchronizeListToActiveDwgToolStripMenuItem.Checked = true;
    else
        synchronizeListToActiveDwgToolStripMenuItem.Checked = false;
        toolStripStatusLabel1.Text = "";
        toolStripStatusLabel2.Text = Settings.Default.ViewStyle;
        toolStripStatusLabel3.Text = Settings.Default.DefaultPrinter;


// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~

    Assembly asm = Assembly.GetExecutingAssembly();
    AssemblyName asmName = asm.GetName();
    EViewMethods.eviewVersion = asmName.Version.ToString();
    radioPartInfo.Checked = true;
    disableAllSearch();
    EViewMethods.userName = Environment.UserName;
    EViewMethods.openConnection();
    mySplash.Progress++;
    EViewMethods.loadFavorites(listFavorites);
    mySplash.Close();
    mySplash.Dispose();
    this.Show();
    this.ActiveControl = comboEntry;

}


精简的清单仅显示更多相关代码:

public Form1() {
    Splash mySplash = new Splash();
    mySplash.TotalValue = 7; //or however many steps you must complete
    mySplash.Show();
    mySplash.Update();

    InitializeComponent();

    //--<begin>--------------
    this.Hide();
    this.WindowState = FormWindowState.Normal;
    mySplash.Progress++;

    ...

    mySplash.Progress++;

    ...

    mySplash.Progress++;

    //~~~~~~~~~~~~~~~~~~~~Getting printer info~~~~~~~~~~~~~~~~~~~~~~~~~
    List<Win32_Printer> printerList = Win32_Printer.GetList();

    ...

    mySplash.Progress++;

    ...

    mySplash.Progress++;

    EViewMethods.reCenterEVafterDwgClose = Settings.Default.ReCenterEVafterDwgClose;
    if (Settings.Default.ReCenterEVafterDwgClose == true)
        recenterEViewAfterDrawingViewerClosesToolStripMenuItem.Checked = true;
    else
        recenterEViewAfterDrawingViewerClosesToolStripMenuItem.Checked = false;

    //-------------------------------------------------------
    EViewMethods.screenBehavior = Settings.Default.ViewStyle;

    ...

    //Form1.ActiveForm.SetDesktopLocation(588, 312); //all screen behavior mode will
    begin centered on the screen
    EViewMethods.eviewUserPrefLocation = Settings.Default.FormEviewLocation;

    //-------------------------------------------------------

    EViewMethods.openConnection();
    mySplash.Progress++;

    ...

    mySplash.Close();
    mySplash.Dispose();

    this.Show();
    this.ActiveControl = comboEntry;
}


飞溅代码:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Reflection;
using System.Threading;

namespace EView2 {
    public partial class Splash : Form {
        static int total = 100;
        static int currPos = 0;
        static string text;

        // Threading
        static Splash ms_frmSplash = null;
        static Thread ms_oThread = null;

        public Splash() {
            InitializeComponent();

            this.labelVersion.Text =
                Assembly.GetExecutingAssembly().GetName().Version.ToString();
        }

        public int TotalValue {
            get {
                return total;
            }

            set {
                total = value;
                progressBar1.Maximum = total;
            }
        }

        public int Progress {
            get {
                return currPos;
            }

            set {
                currPos = value;

                try {
                    progressBar1.Value = currPos;
                }

                catch {
                }
            }
        }

        static public void ShowSplashScreen() {
            // Make sure it's only launched once.
            if (ms_frmSplash != null)
                return;
                ms_oThread = new Thread(new ThreadStart(Splash.ShowForm));
                ms_oThread.IsBackground = true;
                ms_oThread.Start();
            }

            // A property returning the splash screen instance
            static public Splash SplashForm {
                get {
                    return ms_frmSplash;
                }
            }

            // A private entry point for the thread.
            static private void ShowForm() {
            ms_frmSplash = new Splash();
            Application.Run(ms_frmSplash);
        }

最佳答案

我从启动中的多线程内容中看到,您似乎试图使启动屏幕更平稳地运行,并且可能遇到了从不同于创建它的线程更新线程的错误。
解决方法:
  -调用(看起来像复杂的代码,但实际上还不错)
  -启动线程中的250ms计时器,该计时器从实例变量/属性中获取命令(hackish)

因此,无论如何进度条都必须设法自我更新。如果您遇到问题,可以始终在进度设置器中输入me.refresh。或者在更新pb之后执行doevents,它实际上仅应在任何可见形式且没有可引发事件(例如,click)的控件时使用,因为这可能会导致重新进入。

但这不是你要的。抱歉。要解决此问题而无需重写,请在关闭/处置启动画面之前添加此代码

MySplash.Visible = False
System.Windows.Forms.Application.DoEvents


请原谅我,如果我无法对其进行测试以证明它,我缺少最简单的-减少大小写的screnario,它表明了加载和测试的问题(提示-始终在发布代码时这样做50%找到执行此操作的错误,实际上您会得到另外50%的人给您的答案,因为许多人不会阅读过去2个屏幕的代码。我也不保证不会导致应用程序出现在屏幕上另一个窗口下的问题,但是您也没有问过这个问题;-)

09-10 07:18
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