标签:har this layout abc rsh family tin hwnd sizeof
近日在做项目时,需要将查询查来的数据在richTextBox里面分行显示,但是richTextBox默认的行间距很小,显示的数据看着很挤,视觉效果差,后查找资料,发现通过以下方法能设置richTextBox的行间距。
using System.Runtime.InteropServices;
里面粘贴这些代码
public const int WM_USER = 0x0400;
public const int EM_GETPARAFORMAT = WM_USER + 61;
public const int EM_SETPARAFORMAT = WM_USER + 71;
public const long MAX_TAB_STOPS = 32;
public const uint PFM_LINESPACING = 0x00000100;
[StructLayout(LayoutKind.Sequential)]
private struct PARAFORMAT2
{
public int cbSize;
public uint dwMask;
public short wNumbering;
public short wReserved;
public int dxStartIndent;
public int dxRightIndent;
public int dxOffset;
public short wAlignment;
public short cTabCount;
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)]
public int[] rgxTabs;
public int dySpaceBefore;
public int dySpaceAfter;
public int dyLineSpacing;
public short sStyle;
public byte bLineSpacingRule;
public byte bOutlineLevel;
public short wShadingWeight;
public short wShadingStyle;
public short wNumberingStart;
public short wNumberingStyle;
public short wNumberingTab;
public short wBorderSpace;
public short wBorderWidth;
public short wBorders;
}
[DllImport("user32", CharSet = CharSet.Auto)]
private static extern IntPtr SendMessage(HandleRef hWnd, int msg, int wParam, ref PARAFORMAT2 lParam);
//button1_Click里面的代码是设置行间距的代码,可通过设置fmt.dyLineSpacing的值来修改行间距的大小。
private void button1_Click(object sender, EventArgs e)
{
PARAFORMAT2 fmt = new PARAFORMAT2();
fmt.cbSize = Marshal.SizeOf(fmt);
fmt.bLineSpacingRule = 4;
fmt.dyLineSpacing = 40 * (9 + 3);//((int)richTextBox1.Font.Size) * 20 * ((int)ud.Value);
fmt.dwMask = PFM_LINESPACING;
SendMessage(new HandleRef(this.richTextBox1, richTextBox1.Handle), EM_SETPARAFORMAT, 0, ref fmt);
}
标签:har this layout abc rsh family tin hwnd sizeof
原文地址:https://www.cnblogs.com/zhang-rui/p/13820165.html