要让系统记录在应用退出的时候主窗体的大小和状态,采取了WebMatrix中的实现技术:在窗体构造的时候从“记忆”中更新窗体的大小和状态,在窗体关闭的时候,把窗体的大小刷新到“记忆”中:
加载“记忆”:
try
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{
//设置窗体初始位置与大小状态
string strInfo = this._applicationIdentity.GetSetting("WindowMaximized");
if ((strInfo != null) && strInfo.Equals("true"))
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{
base.WindowState = FormWindowState.Maximized;
}
else
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{
base.WindowState = FormWindowState.Normal;
}
//设置窗体大小区域
strInfo = this._applicationIdentity.GetSetting("WindowLeft", false);
if ((strInfo != null) && (strInfo.Length != 0))
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{
int iLeft = Convert.ToInt32(strInfo);
strInfo = this._applicationIdentity.GetSetting("WindowTop", false);
int iTop = Convert.ToInt32(strInfo);
strInfo = this._applicationIdentity.GetSetting("WindowWidth", false);
int iWidth = Convert.ToInt32(strInfo);
strInfo = this._applicationIdentity.GetSetting("WindowHeight", false);
int iHeight = Convert.ToInt32(strInfo);
base.Bounds = new Rectangle(iLeft, iTop, iWidth, iHeight);
}
else
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{
base.Bounds = Screen.FromPoint(Cursor.Position).WorkingArea;
}
base.StartPosition = FormStartPosition.Manual;
}
catch (Exception err)
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{
MessageBox.Show(this, err.Message);
}
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保存“记忆”:
try
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{
//保存窗体位置等状态信息
if (base.WindowState == FormWindowState.Maximized)
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{
this._applicationIdentity.SetSetting("WindowMaximized", "true");
}
else if (base.WindowState != FormWindowState.Minimized)
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{
this._applicationIdentity.SetSetting("WindowMaximized", null);
Rectangle rectangle1 = base.Bounds;
this._applicationIdentity.SetSetting("WindowLeft", Convert.ToString(rectangle1.Left));
this._applicationIdentity.SetSetting("WindowTop", Convert.ToString(rectangle1.Top));
this._applicationIdentity.SetSetting("WindowWidth", Convert.ToString(rectangle1.Width));
this._applicationIdentity.SetSetting("WindowHeight", Convert.ToString(rectangle1.Height));
}
}
catch (Exception)
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{
}
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现在发现一个问题:
我想把这两段代码写在基类中,结果出现问题:窗体在正常状态下的大小不会在加载时有效应用,分析原因就是基类的构造先执行而派生类的后执行,在设计派生类的时候,派生类在设计时有修改窗体尺寸的代码。
如果在派生类中把修改窗体大小的代码删除(在InitializeComponent中)是不现实的,于是想到“一招”:在窗体HandleCreated的时候进行处理,呵呵,正常状态的大小是解决了,但窗体再也没有办法在初始化的时候设置为最大化了,永远都是正常状态。
又一次狂晕!!