如何在DateTimePicker中设置字体大小 | 如何在DateTimePicker中设置字体大小

本文介绍了如何在DateTimePicker中设置字体大小的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我想在Window Form C＃中的DateTimePicker中增加字体大小。我想在DateTime选择器中设置最小14到16个字体大小。

我尝试过下面的代码，但没有工作。

  dateTimePicker1.CalendarFont = new Font（Courier New，8.25F，FontStyle.Italic，GraphicsUnit.Point，（（Byte）（0）））;

解决方案

如果您希望保留其他控件的视觉样式在您的应用程序中，但禁用日期选择器的下拉列表，您可以使用以下代码：

  public class MyDateTimePicker：DateTimePicker 
 {
 [DllImport（uxtheme.dll，ExactSpelling = true，CharSet = CharSet.Unicode）] 
 static extern Int32 SetWindowTheme（IntPtr hWnd，String textSubAppName，String textSubIdList）; 
 
 [DllImport（user32.dll，CharSet = CharSet.Auto）] 
 static extern IntPtr SendMessage（IntPtr hWnd，UInt32 Msg，IntPtr wParam，IntPtr lParam）; 
 
 [DllImport（user32.dll，SetLastError = true）] 
 static extern IntPtr GetParent（IntPtr hWnd）; 
 
 [DllImport（user32.dll，SetLastError = true）] 
 static extern bool MoveWindow（IntPtr hWnd，int X，int Y，int nWidth，int nHeight，bool bRepaint）; 
 
 protected override void OnDropDown（EventArgs eventargs）
 {
 if（Application.RenderWithVisualStyles）
 {
 const int DTM_GETMONTHCAL = 0x1008; 
 
 //获取日历控件的句柄 - 禁用主题
 IntPtr hCalendar = SendMessage（this.Handle，DTM_GETMONTHCAL，IntPtr.Zero，IntPtr.Zero）; 
 if（hCalendar！= IntPtr.Zero）
 {
 SetWindowTheme（hCalendar，，）; 
 
 //获取父弹出窗口的句柄 - 适当调整大小
 IntPtr hParent = GetParent（hCalendar）; 
 if（hParent！= IntPtr.Zero）
 {
 //您在此处指定的大小取决于所选的CalendarFont大小
 MoveWindow（hParent，0，0，400， 300，true）; 
} 
} 
} 
 
 base.OnDropDown（eventargs）; 
} 
}

I want to increase font size in DateTimePicker in Window Form C#. I want to set minimum 14 to 16 font size in DateTime picker.

I have tried below code but it's not working.

dateTimePicker1.CalendarFont = new Font("Courier New", 8.25F, FontStyle.Italic, GraphicsUnit.Point, ((Byte)(0)));

解决方案

If you wish to retain visual styles for the other controls in your application, but disable for the date picker's drop down only, you can use the following code:

public class MyDateTimePicker : DateTimePicker
{
    [DllImport("uxtheme.dll", ExactSpelling = true, CharSet = CharSet.Unicode)]
    static extern Int32 SetWindowTheme(IntPtr hWnd, String textSubAppName, String textSubIdList);

    [DllImport("user32.dll", CharSet = CharSet.Auto)]
    static extern IntPtr SendMessage(IntPtr hWnd, UInt32 Msg, IntPtr wParam, IntPtr lParam);

    [DllImport("user32.dll", SetLastError = true)]
    static extern IntPtr GetParent(IntPtr hWnd);

    [DllImport("user32.dll", SetLastError = true)]
    static extern bool MoveWindow(IntPtr hWnd, int X, int Y, int nWidth, int nHeight, bool bRepaint);

    protected override void OnDropDown(EventArgs eventargs)
    {
        if (Application.RenderWithVisualStyles)
        {
            const int DTM_GETMONTHCAL = 0x1008;

            //Get handle of calendar control - disable theming
            IntPtr hCalendar = SendMessage(this.Handle, DTM_GETMONTHCAL, IntPtr.Zero, IntPtr.Zero);
            if (hCalendar != IntPtr.Zero)
            {
                SetWindowTheme(hCalendar, "", "");

                //Get handle of parent popup - resize appropriately
                IntPtr hParent = GetParent(hCalendar);
                if (hParent != IntPtr.Zero)
                {
                    //The size you specify here will depend on the CalendarFont size chosen
                    MoveWindow(hParent, 0, 0, 400, 300, true);
                }
            }
        }

        base.OnDropDown(eventargs);
    }
}

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