TextBox控制元件自定義樣式
阿新 • • 發佈:2019-02-05
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.Runtime.InteropServices;
namespace Test
{
/*******************************************************************
* * Name: 透明textBox,字型垂直居中,黑色邊框
* * Function: MyTextBox
* * Parameter:
* * Return:
* * Author: YTB
* * Mail: .
* * Date: 2017年11月20日
* *******************************************************************/
public class MyTextBox : TextBox
{
[DllImport("kernel32.dll", CharSet = CharSet.Auto)]
private static extern IntPtr LoadLibrary(string lpFileName);
protected override CreateParams CreateParams
{
get
{
CreateParams prams = base.CreateParams;
if (LoadLibrary("msftedit.dll") != IntPtr.Zero)
{
prams.ExStyle |= 0x020; // transparent
prams.ClassName = "RICHEDIT50W";
}
return prams;
}
}
/// <summary>
/// 獲得當前程序,以便重繪控制元件
/// </summary>
/// <param name="hWnd"></param>
/// <returns></returns>
[System.Runtime.InteropServices.DllImport("user32.dll")]
static extern IntPtr GetWindowDC(IntPtr hWnd);
[System.Runtime.InteropServices.DllImport("user32.dll")]
static extern int ReleaseDC(IntPtr hWnd, IntPtr hDC);
/// <summary>
/// 邊框顏色
/// </summary>
private Color _BorderColor = Color.Black;
public MyTextBox()
{
this.BorderStyle = BorderStyle.FixedSingle;
this.Font = new System.Drawing.Font("幼圓", 10F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
}
//設定Rect訊息
private const int EM_SETRECT = 179;
//獲取Rect訊息
private const int EM_GETRECT = 178;
//貼上訊息
private const int WM_PASTE = 0x0302;
/// <summary>
/// 窗體處理訊息主函式 處理貼上及繪製訊息
/// </summary>
/// <param name="m"></param>
[DllImport("user32.dll", EntryPoint = "SendMessageA")]
private static extern int SendMessage(IntPtr hwnd, int wMsg, IntPtr wParam, string lParam);
[DllImport("user32.dll", EntryPoint = "SendMessageA")]
private static extern int SendMessage(IntPtr hwnd, int wMsg, IntPtr wParam, ref Rectangle lParam);
protected override void OnEnter(EventArgs e)
{
base.OnEnter(e);
SetTextDispLayout();
}
/// <summary>
/// 設定文字顯示佈局位置
/// </summary>
public void SetTextDispLayout()
{
Rectangle rect = new Rectangle();
SendMessage(this.Handle, EM_GETRECT, (IntPtr)0, ref rect);
SizeF size = CreateGraphics().MeasureString("字型高度", Font);//垂直居中 計算文字高度
rect.Y = (int)(Height - size.Height) / 2 + TextPadding.Top;
//rect.Y = TextPadding.Top;
rect.X = TextPadding.Left;
rect.Height = Height;
rect.Width = Width - TextPadding.Right - TextPadding.Left;
SendMessage(this.Handle, EM_SETRECT, IntPtr.Zero, ref rect);
}
/// <summary>
/// 是否允許有回車
/// </summary>
[CategoryAttribute("設定"), DisplayName("允許回車"), DescriptionAttribute("配合內邊使用")]
public bool AllowReturn { get; set; }
private Padding _textpadding = new Padding(1);
/// <summary>
/// Text Padding值 當允許多行和禁止回車時,Paddin有效
/// </summary>
[CategoryAttribute("設定"), DisplayName("內邊距"), DescriptionAttribute(" 當允許多行和禁止回車時,Paddin有效")]
public Padding TextPadding { get { return _textpadding; } set { _textpadding = value; SetTextDispLayout(); } }
/// <summary>
/// 尺寸變化時重新設定字型的顯示位置居中
/// </summary>
/// <param name="e"></param>
protected override void OnSizeChanged(EventArgs e)
{
base.OnSizeChanged(e);
SetTextDispLayout();
}
/// <summary>
/// 窗體處理訊息主函式 處理貼上及繪製訊息
/// </summary>
/// <param name="m"></param>
protected override void WndProc(ref System.Windows.Forms.Message m)
{
base.WndProc(ref m);
if (m.Msg == 0xf || m.Msg == 0x133)
{
//攔截系統訊息,獲得當前控制元件程序以便重繪。
//一些控制元件(如TextBox、Button等)是由系統程序繪製,過載OnPaint方法將不起作用.
//所有這裡並沒有使用過載OnPaint方法繪製TextBox邊框。
//
//MSDN:重寫 OnPaint 將禁止修改所有控制元件的外觀。
//那些由 Windows 完成其所有繪圖的控制元件(例如 Textbox)從不呼叫它們的 OnPaint 方法,
//因此將永遠不會使用自定義程式碼。請參見您要修改的特定控制元件的文件,
//檢視 OnPaint 方法是否可用。如果某個控制元件未將 OnPaint 作為成員方法列出,
//則您無法通過重寫此方法改變其外觀。
//
//MSDN:要了解可用的 Message.Msg、Message.LParam 和 Message.WParam 值,
//請參考位於 MSDN Library 中的 Platform SDK 文件參考。可在 Platform SDK(“Core SDK”一節)
//下載中包含的 windows.h 標頭檔案中找到實際常數值,該檔案也可在 MSDN 上找到。
IntPtr hDC = GetWindowDC(m.HWnd);
if (hDC.ToInt32() == 0)
{
return;
}
System.Drawing.Pen pen = new Pen(this._BorderColor, 1);
pen.Color = _BorderColor;
//繪製邊框
System.Drawing.Graphics g = Graphics.FromHdc(hDC);
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
g.DrawRectangle(pen, 0, 0, this.Width - 1, this.Height - 1);
pen.Dispose();
//返回結果
m.Result = IntPtr.Zero;
//釋放
ReleaseDC(m.HWnd, hDC);
}
string str = "";
int i = 0;
if (m.Msg == 0x0204)
i++;
if (!AllowReturn
&& m.Msg == WM_PASTE
&& System.Windows.Forms.Clipboard.ContainsText())
{
str = System.Windows.Forms.Clipboard.GetText();
System.Windows.Forms.Clipboard.Clear();
string nstr = str.Replace(char.ConvertFromUtf32((int)Keys.Return), "").Replace(char.ConvertFromUtf32((int)Keys.LineFeed), "");
System.Windows.Forms.Clipboard.SetText(nstr);
}
}
}
}
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.Runtime.InteropServices;
namespace Test
{
/*******************************************************************
* * Name: 透明textBox,字型垂直居中,黑色邊框
* * Function: MyTextBox
* * Parameter:
* * Return:
* * Author: YTB
* * Mail: .
* * Date: 2017年11月20日
* *******************************************************************/
public class MyTextBox : TextBox
{
[DllImport("kernel32.dll", CharSet = CharSet.Auto)]
private static extern IntPtr LoadLibrary(string lpFileName);
protected override CreateParams CreateParams
{
get
{
CreateParams prams = base.CreateParams;
if (LoadLibrary("msftedit.dll") != IntPtr.Zero)
{
prams.ExStyle |= 0x020; // transparent
prams.ClassName = "RICHEDIT50W";
}
return prams;
}
}
/// <summary>
/// 獲得當前程序,以便重繪控制元件
/// </summary>
/// <param name="hWnd"></param>
/// <returns></returns>
[System.Runtime.InteropServices.DllImport("user32.dll")]
static extern IntPtr GetWindowDC(IntPtr hWnd);
[System.Runtime.InteropServices.DllImport("user32.dll")]
static extern int ReleaseDC(IntPtr hWnd, IntPtr hDC);
/// <summary>
/// 邊框顏色
/// </summary>
private Color _BorderColor = Color.Black;
public MyTextBox()
{
this.BorderStyle = BorderStyle.FixedSingle;
this.Font = new System.Drawing.Font("幼圓", 10F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
}
//設定Rect訊息
private const int EM_SETRECT = 179;
//獲取Rect訊息
private const int EM_GETRECT = 178;
//貼上訊息
private const int WM_PASTE = 0x0302;
/// <summary>
/// 窗體處理訊息主函式 處理貼上及繪製訊息
/// </summary>
/// <param name="m"></param>
[DllImport("user32.dll", EntryPoint = "SendMessageA")]
private static extern int SendMessage(IntPtr hwnd, int wMsg, IntPtr wParam, string lParam);
[DllImport("user32.dll", EntryPoint = "SendMessageA")]
private static extern int SendMessage(IntPtr hwnd, int wMsg, IntPtr wParam, ref Rectangle lParam);
protected override void OnEnter(EventArgs e)
{
base.OnEnter(e);
SetTextDispLayout();
}
/// <summary>
/// 設定文字顯示佈局位置
/// </summary>
public void SetTextDispLayout()
{
Rectangle rect = new Rectangle();
SendMessage(this.Handle, EM_GETRECT, (IntPtr)0, ref rect);
SizeF size = CreateGraphics().MeasureString("字型高度", Font);//垂直居中 計算文字高度
rect.Y = (int)(Height - size.Height) / 2 + TextPadding.Top;
//rect.Y = TextPadding.Top;
rect.X = TextPadding.Left;
rect.Height = Height;
rect.Width = Width - TextPadding.Right - TextPadding.Left;
SendMessage(this.Handle, EM_SETRECT, IntPtr.Zero, ref rect);
}
/// <summary>
/// 是否允許有回車
/// </summary>
[CategoryAttribute("設定"), DisplayName("允許回車"), DescriptionAttribute("配合內邊使用")]
public bool AllowReturn { get; set; }
private Padding _textpadding = new Padding(1);
/// <summary>
/// Text Padding值 當允許多行和禁止回車時,Paddin有效
/// </summary>
[CategoryAttribute("設定"), DisplayName("內邊距"), DescriptionAttribute(" 當允許多行和禁止回車時,Paddin有效")]
public Padding TextPadding { get { return _textpadding; } set { _textpadding = value; SetTextDispLayout(); } }
/// <summary>
/// 尺寸變化時重新設定字型的顯示位置居中
/// </summary>
/// <param name="e"></param>
protected override void OnSizeChanged(EventArgs e)
{
base.OnSizeChanged(e);
SetTextDispLayout();
}
/// <summary>
/// 窗體處理訊息主函式 處理貼上及繪製訊息
/// </summary>
/// <param name="m"></param>
protected override void WndProc(ref System.Windows.Forms.Message m)
{
base.WndProc(ref m);
if (m.Msg == 0xf || m.Msg == 0x133)
{
//攔截系統訊息,獲得當前控制元件程序以便重繪。
//一些控制元件(如TextBox、Button等)是由系統程序繪製,過載OnPaint方法將不起作用.
//所有這裡並沒有使用過載OnPaint方法繪製TextBox邊框。
//
//MSDN:重寫 OnPaint 將禁止修改所有控制元件的外觀。
//那些由 Windows 完成其所有繪圖的控制元件(例如 Textbox)從不呼叫它們的 OnPaint 方法,
//因此將永遠不會使用自定義程式碼。請參見您要修改的特定控制元件的文件,
//檢視 OnPaint 方法是否可用。如果某個控制元件未將 OnPaint 作為成員方法列出,
//則您無法通過重寫此方法改變其外觀。
//
//MSDN:要了解可用的 Message.Msg、Message.LParam 和 Message.WParam 值,
//請參考位於 MSDN Library 中的 Platform SDK 文件參考。可在 Platform SDK(“Core SDK”一節)
//下載中包含的 windows.h 標頭檔案中找到實際常數值,該檔案也可在 MSDN 上找到。
IntPtr hDC = GetWindowDC(m.HWnd);
if (hDC.ToInt32() == 0)
{
return;
}
System.Drawing.Pen pen = new Pen(this._BorderColor, 1);
pen.Color = _BorderColor;
//繪製邊框
System.Drawing.Graphics g = Graphics.FromHdc(hDC);
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
g.DrawRectangle(pen, 0, 0, this.Width - 1, this.Height - 1);
pen.Dispose();
//返回結果
m.Result = IntPtr.Zero;
//釋放
ReleaseDC(m.HWnd, hDC);
}
string str = "";
int i = 0;
if (m.Msg == 0x0204)
i++;
if (!AllowReturn
&& m.Msg == WM_PASTE
&& System.Windows.Forms.Clipboard.ContainsText())
{
str = System.Windows.Forms.Clipboard.GetText();
System.Windows.Forms.Clipboard.Clear();
string nstr = str.Replace(char.ConvertFromUtf32((int)Keys.Return), "").Replace(char.ConvertFromUtf32((int)Keys.LineFeed), "");
System.Windows.Forms.Clipboard.SetText(nstr);
}
}
}
}