C# DrawString 怎么设置字间距和行间距

[h420943302]

我自己写了一个 方法

//自动换行文字
private Image drawString(Image image,string text,RectangleF rectF,Font font,Brush brush) {
if (text != string.Empty && text != "" && text != null && image!=null) {
Graphics g = Graphics.FromImage(image);
g.SmoothingMode = SmoothingMode.HighQuality;
g.CompositingQuality = CompositingQuality.HighQuality;
g.InterpolationMode = InterpolationMode.High;
g.DrawString(text, font, brush, rectF);
g.Dispose();
}
return image;
}

怎么才能设置 字间距和行间距？

[智商余额不足]

//设置字符间隔
[DllImport("gdi32.dll")]
public static extern int SetTextCharacterExtra(IntPtr hdc, int nCharExtra);  

[智商余额不足]

//gdi32.dll
原型：int SetTextCharacterExtra(HDC hdc, int nCharExtra);

[h420943302]

引用 2 楼 hwenycocodq520 的回复:

//gdi32.dll
原型：int SetTextCharacterExtra(HDC hdc, int nCharExtra);

能嵌入 我的方法里吗 小白一个 你这样写 我不懂

[智商余额不足]

[DllImport("gdi32.dll")]
public static extern int SetTextCharacterExtra(IntPtr hdc, int nCharExtra);

private Image drawString(Image image,string text,RectangleF rectF,Font font,Brush brush,int nCharExtra) 
{
    if (text != string.Empty && text != "" && text != null && image!=null) 
    {
       Graphics g = Graphics.FromImage(image);
       IntPtr hdc = g.GetHdc();
       SetTextCharacterExtra(hdc, nCharExtra);
       g.ReleaseHdc(hdc);
       g.SmoothingMode = SmoothingMode.HighQuality;
       g.CompositingQuality = CompositingQuality.HighQuality;
       g.InterpolationMode = InterpolationMode.High;
       g.DrawString(text, font, brush, rectF);
       g.Dispose();
   }            
   return image;
}

[h420943302]

引用 4 楼 hwenycocodq520 的回复:

[DllImport("gdi32.dll")]
public static extern int SetTextCharacterExtra(IntPtr hdc, int nCharExtra);

private Image drawString(Image image,string text,RectangleF rectF,Font font,Brush brush,int nCharExtra) 
{
    if (text != string.Empty && text != "" && text != null && image!=null) 
    {
       Graphics g = Graphics.FromImage(image);
       IntPtr hdc = g.GetHdc();
       SetTextCharacterExtra(hdc, nCharExtra);
       g.ReleaseHdc(hdc);
       g.SmoothingMode = SmoothingMode.HighQuality;
       g.CompositingQuality = CompositingQuality.HighQuality;
       g.InterpolationMode = InterpolationMode.High;
       g.DrawString(text, font, brush, rectF);
       g.Dispose();
   }            
   return image;
}

不知道为什么没效果

[lytao163]

引用 5 楼 h420943302 的回复:

[quote=引用 4 楼 hwenycocodq520 的回复:]

[DllImport("gdi32.dll")]
public static extern int SetTextCharacterExtra(IntPtr hdc, int nCharExtra);

private Image drawString(Image image,string text,RectangleF rectF,Font font,Brush brush,int nCharExtra) 
{
    if (text != string.Empty && text != "" && text != null && image!=null) 
    {
       Graphics g = Graphics.FromImage(image);
       IntPtr hdc = g.GetHdc();
       SetTextCharacterExtra(hdc, nCharExtra);
       g.ReleaseHdc(hdc);
       g.SmoothingMode = SmoothingMode.HighQuality;
       g.CompositingQuality = CompositingQuality.HighQuality;
       g.InterpolationMode = InterpolationMode.High;
       g.DrawString(text, font, brush, rectF);
       g.Dispose();
   }            
   return image;
}

不知道为什么没效果[/quote] 因为上面的方法是.net 2.0 .net 3.5 以上 请参考下面 链接里的方法。 http://www.cnblogs.com/geovindu/p/4315410.html