Winform控件優(yōu)化Paint事件實現(xiàn)圓角組件及提取繪制圓角的方法
前言
Windows 11下所有控件已經(jīng)默認(rèn)采用圓角,其效果更好、相對有著更好的優(yōu)化,只是這是默認(rèn)的行為,無法進(jìn)一步自定義。
注意兩點:
- Paint事件方法中實現(xiàn)圓角控件不要通過事件參數(shù)
e.ClipRectangle獲取控件區(qū)域范圍 - 注意設(shè)置控件背景透明(雖然Winform中的透明不是完全透明,
實現(xiàn)圓角控件比較好的一個思路是在控件的Paint事件中進(jìn)行繪制,不太好的地方在于每次實現(xiàn)時都要添加事件處理,且不能在設(shè)計器中實時看到效果。
只要有Paint事件的組件都實現(xiàn)繪制圓角【如果沒有,也可以通過將控件放在Panel中,借助Panel的圓角實現(xiàn)】。
Paint事件中實現(xiàn)圓角控件
注意:由于控件在Paint事件方法中進(jìn)行了重新繪制,因此文本也被覆蓋了,需要處理文本的繪制顯示
新建項目 CustomControlRound,窗體中添加兩個Panel、三個Button、一個Label控件。button設(shè)置Flat樣式、邊框為0。
然后在Paint事件方法中調(diào)用繪制圓角區(qū)域的方法(具體代碼參見下一部分的擴(kuò)展方法),具體如下:
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
panel1.Paint += Panel1_Paint;
panel2.Paint += Panel2_Paint;
panel1.BackColor = panel2.BackColor = Color.Transparent;
button1.Paint += Button1_Paint;
button1.FlatStyle = FlatStyle.Flat;
button1.FlatAppearance.BorderSize = 0;
button1.FlatAppearance.MouseDownBackColor = Color.Transparent;
button1.FlatAppearance.MouseOverBackColor = Color.Transparent;
button1.FlatAppearance.CheckedBackColor = Color.Transparent;
button2.Paint += Button1_Paint;
button2.FlatStyle = FlatStyle.Flat;
button2.FlatAppearance.BorderSize = 0;
//button2.FlatAppearance.BorderColor = SystemColors.ButtonFace;
button2.FlatAppearance.MouseDownBackColor = Color.Transparent;
button2.FlatAppearance.MouseOverBackColor = Color.Transparent;
button2.FlatAppearance.CheckedBackColor = Color.Transparent;
button3.Paint += Button1_Paint;
button3.FlatStyle = FlatStyle.Flat;
button3.FlatAppearance.BorderSize = 0;
//button3.FlatAppearance.BorderColor = SystemColors.ButtonFace;
button3.FlatAppearance.MouseDownBackColor = Color.Transparent;
button3.FlatAppearance.MouseOverBackColor = Color.Transparent;
button3.FlatAppearance.CheckedBackColor = Color.Transparent;
label1.Paint += Label1_Paint;
label1.BackColor = Color.Transparent;
}
private void Label1_Paint(object sender, PaintEventArgs e)
{
var l = (Label)sender;
// e.Graphics.DrawRoundRectAndCusp(e.ClipRectangle, 18, Color.FromArgb(180, 200, 210), Color.FromArgb(120, 120, 100)); // 不推薦
e.Graphics.DrawRoundRectAndCusp(new Rectangle(0,0, l.Width,l.Height), 18, Color.FromArgb(180, 200, 210), Color.FromArgb(120, 120, 100));
}
private void Button1_Paint(object sender, PaintEventArgs e)
{
var btn = (Button)sender;
e.Graphics.DrawRoundRectAndCusp(new Rectangle(0, 0, btn.Width, btn.Height), 18, Color.FromArgb(0, 122, 204), Color.FromArgb(8, 39, 57));
((Button)sender).NotifyDefault(false); // 去除窗體失去焦點時最新激活的按鈕邊框外觀樣式
}
private void Panel1_Paint(object sender, PaintEventArgs e)
{
var panel = sender as Panel;
var rect=e.Graphics.DrawRoundRectAndCusp(new Rectangle(0, 0, panel.Width, panel.Height), 18, Color.FromArgb(90, 143, 0), Color.FromArgb(41, 67, 0),true, rectAlign);
}
private void Panel2_Paint(object sender, PaintEventArgs e)
{
var panel = sender as Panel;
var rect = e.Graphics.DrawRoundRectAndCusp(new Rectangle(0, 0, panel.Width, panel.Height), 18, Color.FromArgb(113, 113, 113), Color.FromArgb(0, 0, 0));
}
}查看效果:

在Paint事件中不需要調(diào)用
base.OnPaint(e);,只有在繼承控件重寫OnPaint方法時,才應(yīng)該(在函數(shù)方法開始時)調(diào)用base.OnPaint(e);。
提取繪制圓角矩形和旁邊小尖角的代碼為擴(kuò)展方法
介紹
下面是提取的擴(kuò)展方法,對源代碼進(jìn)行了修改和優(yōu)化。
- 1、可繪制漸變背景色、指定背景色、指定畫刷繪制的背景;可指定漸變背景的方向
- 2、指定圓角半徑的繪制,如果半徑小于等于0,將繪制直角矩形。
- 3、指定三角小尖,默認(rèn)不繪制;指定三角小尖的位置,可供八個位置選擇
- 4、三角小尖的大小,目前感覺作為參數(shù)傳遞不夠靈活,如果需要調(diào)整可直接從代碼中修改,主要修改部分為:
// 尖角的大小 默認(rèn)為 開始位置為_radius 底邊為20,高度為13的等腰三角形 var cuspHemlineStart = _radius; var cuspHemlineLength = 20; var cuspHeight = 13;
擴(kuò)展方法
擴(kuò)展方法代碼如下,將其放在namespace System.Drawing.Drawing2D下,可直接方便的從Graphics對象調(diào)用。
/// <summary>
/// 繪制可漸變的圓角矩形,并指定是否有三角小尖及其位置
/// </summary>
/// <param name="g"></param>
/// <param name="rectangle">矩形區(qū)域</param>
/// <param name="_radius">圓角半徑</param>
/// <param name="begin_bgcolor">背景漸變開始色</param>
/// <param name="end_bgcolor">背景漸變結(jié)束色</param>
/// <param name="cusp">是否有三角小尖,默認(rèn)無</param>
/// <param name="rectAlign">三角小尖的位置,默認(rèn)右上</param>
/// <param name="gradientMode">漸變模式,默認(rèn)垂直方向漸變</param>
public static void DrawRoundRectAndCusp(this Graphics g, Rectangle rectangle, int _radius, Color begin_bgcolor, Color end_bgcolor, bool cusp = false, RectangleAlign rectAlign= RectangleAlign.RightTop, LinearGradientMode gradientMode = LinearGradientMode.Vertical)
{
////抗鋸齒 等模式在Graphics外層自定義設(shè)置
//g.SmoothingMode = SmoothingMode.AntiAlias;
//漸變填充
LinearGradientBrush linearGradientBrush = new LinearGradientBrush(rectangle, begin_bgcolor, end_bgcolor, gradientMode);
g.DrawRoundRectAndCusp(rectangle, _radius, linearGradientBrush, cusp, rectAlign);
}
/// <summary>
/// 繪制指定背景的圓角矩形,并指定是否有三角小尖及其位置
/// </summary>
/// <param name="g"></param>
/// <param name="rectangle">矩形區(qū)域</param>
/// <param name="_radius">圓角半徑</param>
/// <param name="bgcolor">指定背景色</param>
/// <param name="cusp">是否有三角小尖,默認(rèn)無</param>
/// <param name="rectAlign">三角小尖的位置,默認(rèn)右上</param>
public static void DrawRoundRectAndCusp(this Graphics g, Rectangle rectangle, int _radius, Color bgcolor, bool cusp = false, RectangleAlign rectAlign = RectangleAlign.RightTop)
{
////抗鋸齒 等模式在Graphics外層自定義設(shè)置
//g.SmoothingMode = SmoothingMode.AntiAlias;
//漸變填充
var brush = new SolidBrush(bgcolor);
g.DrawRoundRectAndCusp(rectangle, _radius, brush, cusp, rectAlign);
}
/// <summary>
/// 繪制Brush畫刷的圓角矩形,并指定是否有三角小尖及其位置
/// </summary>
/// <param name="g"></param>
/// <param name="rectangle">矩形區(qū)域</param>
/// <param name="_radius">圓角半徑</param>
/// <param name="bgbrush">指定背景畫刷</param>
/// <param name="cusp">是否有三角小尖,默認(rèn)無</param>
/// <param name="rectAlign">三角小尖的位置,默認(rèn)右上</param>
public static void DrawRoundRectAndCusp(this Graphics g, Rectangle rectangle, int _radius, Brush bgbrush, bool cusp = false, RectangleAlign rectAlign = RectangleAlign.RightTop)
{
////抗鋸齒 盡可能高質(zhì)量繪制
g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias;
g.PixelOffsetMode = PixelOffsetMode.HighQuality;
g.SmoothingMode = SmoothingMode.AntiAlias; // SmoothingMode.HighQuality
g.CompositingQuality = CompositingQuality.HighQuality;
g.InterpolationMode = InterpolationMode.HighQualityBilinear;
var rect = rectangle;
//畫尖角 對應(yīng)的變更rect區(qū)域
if (cusp)
{
// 尖角的大小 默認(rèn)為 開始位置為_radius 底邊為20,高度為13的等腰三角形
var cuspHemlineStart = _radius;
var cuspHemlineLength = 20;
var cuspHeight = 13;
// 讓位出來的間隔暫時為尖角高度-1
var span = cuspHeight - 1;
// 三角頂點
PointF p1, p2, p3;
switch (rectAlign)
{
case RectangleAlign.AboveLeft:
p1 = new PointF(rectangle.X + cuspHemlineStart, rectangle.Y + cuspHeight);
p2 = new PointF(rectangle.X + cuspHemlineStart + cuspHemlineLength, rectangle.Y + cuspHeight);
p3 = new PointF(rectangle.X + cuspHemlineStart + cuspHemlineLength / 2, rectangle.Y);
rect = new Rectangle(rectangle.X, rectangle.Y + span, rectangle.Width, rectangle.Height - span);
break;
case RectangleAlign.AboveRight:
p1 = new PointF(rectangle.Right - cuspHemlineStart, rectangle.Y + cuspHeight);
p2 = new PointF(rectangle.Right - cuspHemlineStart - cuspHemlineLength, rectangle.Y + cuspHeight);
p3 = new PointF(rectangle.Right - cuspHemlineStart - cuspHemlineLength / 2, rectangle.Y);
rect = new Rectangle(rectangle.X, rectangle.Y + span, rectangle.Width, rectangle.Height - span);
break;
case RectangleAlign.RightBottom:
p1 = new PointF(rectangle.Right - cuspHeight, rectangle.Bottom - cuspHemlineStart);
p2 = new PointF(rectangle.Right - cuspHeight, rectangle.Bottom - cuspHemlineStart - cuspHemlineLength);
p3 = new PointF(rectangle.Right, rectangle.Bottom - cuspHemlineStart - cuspHemlineLength / 2);
rect = new Rectangle(rectangle.X, rectangle.Y, rectangle.Width - span, rectangle.Height);
break;
case RectangleAlign.BelowRight:
p1 = new PointF(rectangle.Right - cuspHemlineStart, rectangle.Bottom - cuspHeight);
p2 = new PointF(rectangle.Right - cuspHemlineStart - cuspHemlineLength, rectangle.Bottom - cuspHeight);
p3 = new PointF(rectangle.Right - cuspHemlineStart - cuspHemlineLength / 2, rectangle.Bottom);
rect = new Rectangle(rectangle.X, rectangle.Y, rectangle.Width, rectangle.Height - span);
break;
case RectangleAlign.BelowLeft:
p1 = new PointF(rectangle.X + cuspHemlineStart, rectangle.Bottom - cuspHeight);
p2 = new PointF(rectangle.X + cuspHemlineStart + cuspHemlineLength, rectangle.Bottom - cuspHeight);
p3 = new PointF(rectangle.X + cuspHemlineStart + cuspHemlineLength / 2, rectangle.Bottom);
rect = new Rectangle(rectangle.X, rectangle.Y, rectangle.Width, rectangle.Height - span);
break;
case RectangleAlign.LeftBottom:
p1 = new PointF(rectangle.X + cuspHeight, rectangle.Bottom - cuspHemlineStart);
p2 = new PointF(rectangle.X + cuspHeight, rectangle.Bottom - cuspHemlineStart - cuspHemlineLength);
p3 = new PointF(rectangle.X, rectangle.Bottom - cuspHemlineStart - cuspHemlineLength / 2);
rect = new Rectangle(rectangle.X + span, rectangle.Y, rectangle.Width - span, rectangle.Height);
break;
case RectangleAlign.LeftTop:
p1 = new PointF(rectangle.X + cuspHeight, rectangle.Y + cuspHemlineStart);
p2 = new PointF(rectangle.X + cuspHeight, rectangle.Y + cuspHemlineStart + cuspHemlineLength);
p3 = new PointF(rectangle.X, rectangle.Y + cuspHemlineStart + cuspHemlineLength / 2);
rect = new Rectangle(rectangle.X + span, rectangle.Y, rectangle.Width - span, rectangle.Height);
break;
case RectangleAlign.RightTop:
default:
p1 = new PointF(rectangle.Right - cuspHeight, rectangle.Y + cuspHemlineStart);
p2 = new PointF(rectangle.Right - cuspHeight, rectangle.Y + cuspHemlineStart + cuspHemlineLength);
p3 = new PointF(rectangle.Right, rectangle.Y + cuspHemlineStart + cuspHemlineLength / 2);
rect = new Rectangle(rectangle.X, rectangle.Y, rectangle.Width - span, rectangle.Height);
break;
}
PointF[] ptsArray = new PointF[] { p1, p2, p3 };
// 填充參數(shù)點所指定的多邊形內(nèi)部
g.FillPolygon(bgbrush, ptsArray);
}
//填充
g.FillPath(bgbrush, rect.GetRoundedRectPath(_radius));
}
/// <summary>
/// 根據(jù)普通矩形得到圓角矩形的路徑 【根據(jù)矩形區(qū)域rect,計算呈現(xiàn)radius圓角的Graphics路徑】
/// </summary>
/// <param name="rect">原始矩形</param>
/// <param name="radius">半徑</param>
/// <returns>圖形路徑</returns>
public static GraphicsPath GetRoundedRectPath(this Rectangle rect, int radius)
{
#region 正確繪制圓角矩形區(qū)域
int R = radius*2;
Rectangle arcRect = new Rectangle(rect.Location, new Size(R, R));
GraphicsPath path = new GraphicsPath();
if (radius <= 0)
{
path.AddRectangle(rect);
}
else
{
// 左上圓弧 左手坐標(biāo)系,順時針為正 從180開始,轉(zhuǎn)90度
path.AddArc(arcRect, 180, 90);
// 右上圓弧
arcRect.X = rect.Right - R;
path.AddArc(arcRect, 270, 90);
// 右下圓弧
arcRect.Y = rect.Bottom - R;
path.AddArc(arcRect, 0, 90);
// 左下圓弧
arcRect.X = rect.Left;
path.AddArc(arcRect, 90, 90);
}
//path.CloseFigure();
// 閉合路徑中所有開放圖形,并形成新圖形
path.CloseAllFigures();
return path;
#endregion
}
/// <summary>
/// 獲取圓角矩形的路徑
/// </summary>
/// <param name="rect">原始矩形</param>
/// <param name="radius">半徑</param>
/// <returns>圖形路徑</returns>
public static GraphicsPath GetRoundedRectPath(int x, int y, int width, int height, int radius)
{
Rectangle rect = new Rectangle(x, y, width, height);
return rect.GetRoundedRectPath(radius);
}測試尖角的顯示位置
復(fù)制幾個Panel,在Paint事件中分別處理尖角的位置
panel1.Paint += Panel1_Paint;
panel3.Paint += Panel1_Paint;
panel4.Paint += Panel1_Paint;
panel5.Paint += Panel1_Paint;
panel6.Paint += Panel1_Paint;
panel7.Paint += Panel1_Paint;
panel8.Paint += Panel1_Paint;
panel9.Paint += Panel1_Paint;
/// ......
private void Panel1_Paint(object sender, PaintEventArgs e)
{
var panel = sender as Panel;
var rectAlign = RectangleAlign.RightTop;
switch (panel.Name)
{
case "panel3":
rectAlign = RectangleAlign.AboveLeft;
break;
case "panel4":
rectAlign = RectangleAlign.AboveRight;
break;
case "panel5":
rectAlign = RectangleAlign.BelowLeft;
break;
case "panel6":
rectAlign = RectangleAlign.BelowRight;
break;
case "panel7":
rectAlign = RectangleAlign.LeftBottom;
break;
case "panel8":
rectAlign = RectangleAlign.LeftTop;
break;
case "panel9":
rectAlign = RectangleAlign.RightBottom;
break;
default:
break;
}
var rect=e.Graphics.DrawRoundRectAndCusp(new Rectangle(0, 0, panel.Width, panel.Height), 18, Color.FromArgb(90, 143, 0), Color.FromArgb(41, 67, 0),true, rectAlign);
e.Graphics.DrawText(rect, "這是一個Panel控件,非常適合顯示消息", Color.White, panel.Font);
}查看效果:

重繪控件后文本的處理
由于重新繪制導(dǎo)致文本也被覆蓋的情況,有比較常見的兩種處理方法:
- 重繪控件的同時,重繪文本文字
- 通過添加Label控件實現(xiàn)文本處理
同時重繪文本
同樣將繪制文本的方法提取為擴(kuò)展方法,借助StringFormat字符串格式對象實現(xiàn)文字的布局處理。
不推薦使用
Graphics.DrawString繪制按鈕控件(Rectangle區(qū)域)內(nèi)的文字,當(dāng)然DrawString也有一定有時比如文字方向的處理。
/// <summary>
/// 繪制(控件區(qū)域)文本內(nèi)容
/// </summary>
/// <param name="g"></param>
/// <param name="rect"></param>
/// <param name="text"></param>
/// <param name="color"></param>
/// <param name="font"></param>
/// <param name="_textAlign">文字布局,默認(rèn)居中。實際測試并未真正的居中,垂直方向偏上,改為通過計算rect的中心位置實現(xiàn),使用微軟雅黑還好點,字體大小最好偶數(shù)</param>
/// <param name="rtl">是否RightToLeft 無效果,不推薦使用</param>
public static void DrawText(this Graphics g, Rectangle rect, string text, Color color, Font font, ContentAlignment _textAlign = ContentAlignment.MiddleCenter, bool rtl=false)
{
var formatFlags = TextFormatFlags.HorizontalCenter | TextFormatFlags.VerticalCenter; // 默認(rèn)居中
switch (_textAlign)
{
case ContentAlignment.TopLeft:
formatFlags = TextFormatFlags.Top | TextFormatFlags.Left;
break;
case ContentAlignment.TopCenter:
formatFlags = TextFormatFlags.Top | TextFormatFlags.HorizontalCenter;
break;
case ContentAlignment.TopRight:
formatFlags = TextFormatFlags.Top | TextFormatFlags.Right;
break;
case ContentAlignment.MiddleLeft:
formatFlags = TextFormatFlags.VerticalCenter | TextFormatFlags.Left;
break;
case ContentAlignment.MiddleRight:
formatFlags = TextFormatFlags.VerticalCenter | TextFormatFlags.Right;
break;
case ContentAlignment.BottomLeft:
formatFlags = TextFormatFlags.Bottom | TextFormatFlags.Left;
break;
case ContentAlignment.BottomCenter:
formatFlags = TextFormatFlags.Bottom | TextFormatFlags.HorizontalCenter;
break;
case ContentAlignment.BottomRight:
formatFlags = TextFormatFlags.Bottom | TextFormatFlags.Right;
break;
case ContentAlignment.MiddleCenter:
default:
break;
}
if (rtl)
{
formatFlags |= TextFormatFlags.RightToLeft; // 無效果
}
TextRenderer.DrawText(g, text, font, rect, color, formatFlags);
}要注意添加了小三角后的文字繪制區(qū)域問題,如果使用默認(rèn)的全部預(yù)期有可能導(dǎo)致文字超出范圍,且,布局也不是相對于繪制的主體。如下圖對比的效果。
因此,可修改圓角繪制的函數(shù),使其返回繪制后的主體區(qū)域。
private void Panel1_Paint(object sender, PaintEventArgs e)
{
var panel = sender as Panel;
var rect=e.Graphics.DrawRoundRectAndCusp(new Rectangle(0, 0, panel.Width, panel.Height), 18, Color.FromArgb(90, 143, 0), Color.FromArgb(41, 67, 0),true, rectAlign);
//e.Graphics.DrawText(e.ClipRectangle, "這是一個Panel控件,非常適合顯示消息", Color.White, panel.Font);
// 使用合適的區(qū)域
e.Graphics.DrawText(rect, "這是一個Panel控件,非常適合顯示消息", Color.White, panel.Font);
}
通過添加Label控件實現(xiàn)對文本的處理【有尖角時需要額外處理】
label2.Text = "我是Label顯示在圓角按鈕上"; label2.Parent = button1; label2.AutoSize = false; label2.Dock = DockStyle.Fill; label2.BackColor = Color.Transparent; label2.TextAlign = ContentAlignment.MiddleCenter; label2.ForeColor = Color.Wheat;

Paint事件中繪制圓角的優(yōu)點
完全由用戶繪制按鈕區(qū)域?qū)崿F(xiàn)圓角【之前文章介紹過】,可以發(fā)現(xiàn),與直接在Paint事件中實現(xiàn)圓角,有著一定的鋸齒,雖然不是很嚴(yán)重,但是還是Paint事件中實現(xiàn)的圓角看著相對好一些。

之前完全由用戶繪制控件區(qū)域出現(xiàn)鋸齒的問題,原因在于使用
new Region(graphicPath)構(gòu)造函數(shù)創(chuàng)建的新Region對象,創(chuàng)建的Region無法實現(xiàn)抗鋸齒,即使開始抗鋸齒和高質(zhì)量繪制(無法應(yīng)用到最終的Region)。[唯一的]解決辦法,是不創(chuàng)建新的Region,直接繪制無鋸齒圖形【無法對Region進(jìn)行抗鋸齒】。
窗體失去焦點時按鈕外觀邊框問題
窗體失去焦點后,Button會顯示出一個邊框(即使已經(jīng)設(shè)置BorderSize為0),只有在窗體失去焦點后,最后一個被激活過的Button(點擊過的)才會出現(xiàn)。

比較好的解決辦法是在Button的Paint事件中執(zhí)行Button.NotifyDefault(false)方法。
下面是幾種解決方式:
- 通過繼承Button控件,重寫NotifyDefault方法實現(xiàn)。
class MyButton:Button
{
public override void NotifyDefault(bool value)
{
base.NotifyDefault(false);
}
}- 設(shè)置FlatAppearance.BorderColor顏色與下層背景色一致
或者,還有一個取巧的解決辦法,就是,設(shè)置FlatAppearance.BorderColor為Button按鈕后面的背景色,這樣就看不出來,類似沒有的效果。如 button1.FlatAppearance.BorderColor = SystemColors.Control;。
- 在Button的Paint事件方法中調(diào)用
NotifyDefault(false)
或者,不是繼承重寫B(tài)utton控件,直接在Button的Paint事件中,調(diào)用Button.NotifyDefault(false);方法。
private void Button1_Paint(object sender, PaintEventArgs e)
{
var btn = (Button)sender;
e.Graphics.DrawRoundRectAndCusp(new Rectangle(0, 0, btn.Width, btn.Height), 18, Color.FromArgb(0, 122, 204), Color.FromArgb(8, 39, 57));
((Button)sender).NotifyDefault(false); // 去除窗體失去焦點時最新激活的按鈕邊框外觀樣式
}Paint事件中繪制控件的問題【不要使用(事件)參數(shù)e.ClipRectangle】
直接看下圖演示,在發(fā)生控件大小、位置調(diào)整等需要重繪時,會發(fā)生控件錯亂、顯示不完整重疊等問題。

比如Panel事件中,原本的寫法為:
var rect=e.Graphics.DrawRoundRectAndCusp(e.ClipRectangle, 18, Color.FromArgb(90, 143, 0), Color.FromArgb(41, 67, 0),true, rectAlign);
將其改為轉(zhuǎn)換傳遞過來的控件參數(shù)為Panel對象,并通過其寬高獲取其繪制區(qū)域:
var rect=e.Graphics.DrawRoundRectAndCusp(new Rectangle(0, 0, panel.Width, panel.Height), 18, Color.FromArgb(90, 143, 0), Color.FromArgb(41, 67, 0),true, rectAlign);
修改后錯亂問題就不存在了:

到此這篇關(guān)于Winform控件優(yōu)化Paint事件實現(xiàn)圓角組件及提取繪制圓角的擴(kuò)展方法的文章就介紹到這了,更多相關(guān)Winform控件優(yōu)化內(nèi)容請搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持腳本之家!
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