我有这个显示/打开新表格的代码:
在gkh_Keydown事件中,当我点击Ctrl + M时,它显示/打开新表格。 现在我想这样做,当我再次点击Ctrl + M它将关闭新表格。
当我点击一次打开新表格时,它首先进入此表格:
public MagnifierMainForm(bool showMain)
{
InitializeComponent();
if (showMain == true)
{
GetConfiguration();
//--- My Init ---
FormBorderStyle = FormBorderStyle.None;
TopMost = true;
StartPosition = FormStartPosition.CenterScreen;
mImageMagnifierMainControlPanel = Properties.Resources.magControlPanel20061222;
if (mImageMagnifierMainControlPanel == null)
throw new Exception("Resource cannot be found!");
Width = mImageMagnifierMainControlPanel.Width;
Height = mImageMagnifierMainControlPanel.Height;
HotSpot hsConfiguration = new HotSpot(new Rectangle(50, 15, 35, 30));
hsConfiguration.OnMouseDown += new HotSpot.MouseEventDelegate(hsConfiguration_OnMouseDown);
hsConfiguration.OnMouseUp += new HotSpot.MouseEventDelegate(hsConfiguration_OnMouseUp);
hsConfiguration.OnMouseMove += new HotSpot.MouseEventDelegate(hsConfiguration_OnMouseMove);
HotSpot hsMagnfier = new HotSpot(new Rectangle(10, 15, 30, 30));
hsMagnfier.OnMouseMove += new HotSpot.MouseEventDelegate(hsMagnfier_OnMouseMove);
hsMagnfier.OnMouseDown += new HotSpot.MouseEventDelegate(hsMagnfier_OnMouseDown);
hsMagnfier.OnMouseUp += new HotSpot.MouseEventDelegate(hsMagnfier_OnMouseUp);
HotSpot hsExit = new HotSpot(new Rectangle(95, 20, 15, 15));
hsExit.OnMouseUp += new HotSpot.MouseEventDelegate(hsExit_OnMouseUp);
mHotSpots.Add(hsConfiguration);
mHotSpots.Add(hsMagnfier);
mHotSpots.Add(hsExit);
ShowInTaskbar = false;
this.Show();
}
else
{
GetConfiguration();
int x = mLastCursorPosition.X;
int y = mLastCursorPosition.Y;
MagnifierForm magnifier = new MagnifierForm(mConfiguration, System.Windows.Forms.Cursor.Position);//mLastCursorPosition);
magnifier.Show();
}
}
因为我做错了它正在做其他部分:
GetConfiguration();
int x = mLastCursorPosition.X;
int y = mLastCursorPosition.Y;
MagnifierForm magnifier = new MagnifierForm(mConfiguration, System.Windows.Forms.Cursor.Position);//mLastCursorPosition);
magnifier.Show();
magnifier.Show();确实显示新表格。
现在我希望如果我再次按Ctrl + M它会关闭Form magnifier.Show();
所以在我做过的else部分的gkh_KeyDown事件中的Form中:
magnifierform.Close();
这次仅为放大镜形式添加了一个新变量,并尝试将其关闭。 所以在magnifierform中我做了:
public MagnifierForm(Configuration configuration, Point startPoint)
{
InitializeComponent();
//--- My Init ---
mConfiguration = configuration;
FormBorderStyle = FormBorderStyle.None;
ShowInTaskbar = mConfiguration.ShowInTaskbar;
TopMost = mConfiguration.TopMostWindow;
Width = mConfiguration.MagnifierWidth;
Height = mConfiguration.MagnifierHeight;
// Make the window (the form) circular
GraphicsPath gp = new GraphicsPath();
gp.AddEllipse(ClientRectangle);
Region = new Region(gp);
mImageMagnifier = Properties.Resources.magnifierGlass;
mTimer = new Timer();
mTimer.Enabled = true;
mTimer.Interval = 20;
mTimer.Tick += new EventHandler(HandleTimer);
mScreenImage = new Bitmap(Screen.PrimaryScreen.Bounds.Width,
Screen.PrimaryScreen.Bounds.Height);
mStartPoint = startPoint;
mTargetPoint = startPoint;
if (mConfiguration.ShowInTaskbar)
ShowInTaskbar = true;
else
ShowInTaskbar = false;
}
public MagnifierForm()
{
}
添加了另一个不执行任何操作的实例,因为我只想关闭它。 但它从未关闭过。
magnifierform是MagnifierForm表单的一个变量,我想直接关闭它而不是像以前那样使用其他形式的MagnifierMainForm。
我只想关闭它,但它从未关闭过。我在线上使用了一个断点:
magnifierform.Close();
在第二个Ctrl + M上它到达那里但它不会关闭MagnifierForm。什么都不做。
修改
我在MagnifierForm中添加了其他内容:我添加了:
public MagnifierForm()
{
this.Close();
}
在else方面的gkh_KeyDown事件中的Form1中,我将其更改为:
else
{
magnifierform = new MagnifierForm();
}
因此实例我在第二个Ctrl + M上执行此操作 断点再次停在那里但是当我继续它没有关闭表格时。
答案 0 :(得分:1)
那么,如果MagnifierMainForm()已经打开你要关闭它吗?...否则创建一个新实例并显示它?在按下Ctrl + M时触发的代码中,执行以下操作:
Form frmToClose = null;
foreach (Form frm in Application.OpenForms)
{
if (frm is MagnifierMainForm)
{
frmToClose = frm;
break;
}
}
if (frmToClose != null)
{
frmToClose.Close();
}
else
{
// create a new instance of MagnifierMainForm() and display it
}
答案 1 :(得分:0)
使用此方法form.Dispose();