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自定义绘制Aero标题栏,不扩展到工作区

aero-glass aero winforms

2

Phil Wright · 技术社区 · 14 年前

我的WinForms应用程序在Vista/Windows7上具有标准的Aero玻璃外观。

我想自定义绘制窗口标题栏,这样它就保留了Aero玻璃的外观,带有玻璃最小/最大/关闭按钮,但没有标题文本和窗口图标。我尝试过通过覆盖wm_cpaint来实现这一点,但覆盖此事件始终会导致移除玻璃。

是否有人知道如何在玻璃到位的情况下覆盖WM NCPAINT,以便有效地将玻璃区域吸引过来?

1 回复 | 直到 13 年前

1

8

Alex 14 年前

WM_NCPAINT

internal class NonClientRegionAPI
{
    [DllImport( "DwmApi.dll" )]
    public static extern void DwmIsCompositionEnabled( ref bool pfEnabled );

    [StructLayout( LayoutKind.Sequential )]
    public struct WTA_OPTIONS
    {
        public WTNCA dwFlags;
        public WTNCA dwMask;
    }

    [Flags]
    public enum WTNCA : uint
    {
        NODRAWCAPTION = 1,
        NODRAWICON = 2,
        NOSYSMENU = 4,
        NOMIRRORHELP = 8,
        VALIDBITS = NODRAWCAPTION | NODRAWICON | NOSYSMENU | NOMIRRORHELP
    }

    public enum WINDOWTHEMEATTRIBUTETYPE : uint
    {
        /// <summary>Non-client area window attributes will be set.</summary>
        WTA_NONCLIENT = 1,
    }

    [DllImport( "uxtheme.dll" )]
    public static extern int SetWindowThemeAttribute(
        IntPtr hWnd,
        WINDOWTHEMEATTRIBUTETYPE wtype,
        ref WTA_OPTIONS attributes,
        uint size );
}

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();

        // Set your options. We want no icon and no caption.
        SetWindowThemeAttributes( NonClientRegionAPI.WTNCA.NODRAWCAPTION | NonClientRegionAPI.WTNCA.NODRAWICON );
    }

    private void SetWindowThemeAttributes( NonClientRegionAPI.WTNCA attributes )
    {
        // This tests that the OS will support what we want to do. Will be false on Windows XP and earlier,
        // as well as on Vista and 7 with Aero Glass disabled.
        bool hasComposition = false;
        NonClientRegionAPI.DwmIsCompositionEnabled( ref hasComposition );
        if( !hasComposition )
            return;

        NonClientRegionAPI.WTA_OPTIONS options = new NonClientRegionAPI.WTA_OPTIONS();
        options.dwFlags = attributes;
        options.dwMask = NonClientRegionAPI.WTNCA.VALIDBITS;

        // The SetWindowThemeAttribute API call takes care of everything
        NonClientRegionAPI.SetWindowThemeAttribute(
            this.Handle,
            NonClientRegionAPI.WINDOWTHEMEATTRIBUTETYPE.WTA_NONCLIENT,
            ref options,
            (uint)Marshal.SizeOf( typeof( NonClientRegionAPI.WTA_OPTIONS ) ) );
    }
}

http://img708.imageshack.us/img708/1972/noiconnocaptionform.png