winform中的Balloon提示

短命女 2022-03-29 05:56 186阅读 0赞

1.扩展类库

![None.gif][] namespace  DvsCC  
![ExpandedBlockStart.gif][]![ContractedBlock.gif][] ![dot.gif][] \{  
![InBlock.gif][]    using System;  
![InBlock.gif][]    using System.Drawing;  
![InBlock.gif][]    using System.Reflection;  
![InBlock.gif][]    using System.Runtime.InteropServices;  
![InBlock.gif][]    using System.Windows.Forms;  
![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]    /\*\*//// <summary>  
![InBlock.gif][]    /// Summary description for NativeMethods.  
![ExpandedSubBlockEnd.gif][]    /// </summary>  
![InBlock.gif][]    public class NativeMethods  
![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]    ![dot.gif][]\{  
![InBlock.gif][]        private const long WS\_POPUP = 0x80000000;  
![InBlock.gif][]        private const long TTS\_BALLOON = 0x40;  
![InBlock.gif][]        private const long TTS\_NOFADE = 0x20;  
![InBlock.gif][]        private const int GWL\_STYLE = \-16;  
![InBlock.gif][]        private const int WM\_USER = 0x0400;  
![InBlock.gif][]        private const int TTM\_SETTIPBKCOLOR = WM\_USER \+ 19;  
![InBlock.gif][]  
![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]        private NativeMethods() ![dot.gif][]\{\}  
![InBlock.gif][]  
![InBlock.gif][]  
![InBlock.gif][]        public static void SetBalloonStyle ( ToolTip toolTip )  
![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]        ![dot.gif][]\{  
![InBlock.gif][]            NativeWindow window = GetNativeWindow ( toolTip );  
![InBlock.gif][]            NativeMethods.SetWindowLong ( window.Handle, GWL\_STYLE , WS\_POPUP | TTS\_BALLOON | TTS\_NOFADE );  
![InBlock.gif][]              
![ExpandedSubBlockEnd.gif][]        \}  
![InBlock.gif][]      
![InBlock.gif][]        public static void SetBackColor ( ToolTip toolTip, Color color )  
![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]        ![dot.gif][]\{  
![InBlock.gif][]            int backColor =  ColorTranslator.ToWin32( color );  
![InBlock.gif][]            NativeWindow window = GetNativeWindow ( toolTip );  
![InBlock.gif][]            //setting back color  
![InBlock.gif][]            SendMessage( window.Handle, TTM\_SETTIPBKCOLOR, backColor, 0 );    
![ExpandedSubBlockEnd.gif][]        \}  
![InBlock.gif][]  
![InBlock.gif][]        private static NativeWindow GetNativeWindow ( ToolTip toolTip )  
![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]        ![dot.gif][]\{  
![InBlock.gif][]            FieldInfo windowField = toolTip.GetType().GetField("window", BindingFlags.NonPublic | BindingFlags.Static | BindingFlags.Instance );  
![InBlock.gif][]            NativeWindow window  = (NativeWindow)windowField.GetValue ( toolTip );  
![InBlock.gif][]            if ( window.Handle == IntPtr.Zero ) throw new ArgumentNullException ( "window handle is not crated." );  
![InBlock.gif][]            return window;  
![ExpandedSubBlockEnd.gif][]        \}  
![InBlock.gif][]  
![InBlock.gif][]        \[DllImport("user32.dll")\]  
![InBlock.gif][]        private static extern long SetWindowLong(IntPtr hwnd,int index,long val);  
![InBlock.gif][]  
![InBlock.gif][]        \[DllImport("user32.dll")\]  
![InBlock.gif][]        private static extern int SendMessage( IntPtr hwnd, int msg, int wParam, int lParam);  
![ExpandedSubBlockEnd.gif][]    \}  
![InBlock.gif][]   
![ExpandedBlockEnd.gif][]\}   
![None.gif][]

2.使用方法

![None.gif][] NativeMethods.SetBalloonStyle ( toolTip1 );

[None.gif]: /images/20220329/8d69b75202b746e796795230a725959b.png
[ExpandedBlockStart.gif]: https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif
[ContractedBlock.gif]: https://www.cnblogs.com/Images/OutliningIndicators/ContractedBlock.gif
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[InBlock.gif]: /images/20220329/be11773cd6964cc18bee71413f36a913.png
[ExpandedSubBlockStart.gif]: https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif
[ContractedSubBlock.gif]: /images/20220329/c6c21efee16046fc8578901f60da1fcc.png
[ExpandedSubBlockEnd.gif]: /images/20220329/3eaf65f292e24b548b7e078dc5a9942c.png
[ExpandedBlockEnd.gif]: /images/20220329/4f00133edf9f4685bdd8318d520c0a8c.png