C# WinForms相当于WPF WindowInteropHelper、HwndSource、HwndSourceHook
我有一段代码,如:C# WinForms相当于WPF WindowInteropHelper、HwndSource、HwndSourceHook,c#,.net,winforms,native,user32,C#,.net,Winforms,Native,User32,我有一段代码,如: IntPtr hWnd = new WindowInteropHelper(this).Handle; HwndSource source = HwndSource.FromHwnd(hWnd); source.AddHook(new HwndSourceHook(WndProc)); NativeMethods.PostMessage((IntPtr)NativeMethods.HWND_BROADCAST, NativeMethods.WM_CALL, IntPtr.Ze
IntPtr hWnd = new WindowInteropHelper(this).Handle;
HwndSource source = HwndSource.FromHwnd(hWnd);
source.AddHook(new HwndSourceHook(WndProc));
NativeMethods.PostMessage((IntPtr)NativeMethods.HWND_BROADCAST, NativeMethods.WM_CALL, IntPtr.Zero, IntPtr.Zero);
这最初是在WPF应用程序中。但是,我需要在WinForms应用程序中复制该功能。此外,NativeMethods.PostMessage仅映射到user32.dll PostMessage:
[DllImport("user32")]
public static extern bool PostMessage(IntPtr hwnd, int msg, IntPtr wparam, IntPtr lparam);
我是否可以在WinForms应用程序中使用WindowInteropHelper/HwndSource/HwndSourceHook的1对1等价物?我不需要更多的WPF背景。但对我来说,这听起来像是你在寻找的东西。基本要点是:除了源代码中的
AddHook
之外,你不需要任何东西。每个WinForm都有一个方法GetHandle()
,该方法将为您提供窗口/窗体的句柄(您自己已经找到了PostMessage
)
也要翻译AddHook
您要么编写自己的类实现IMessageFilter
(1),要么重写WndProc()
(2)。(1) 将在应用程序范围内接收消息,无论您将消息发送到哪个表单,而(2)仅接收覆盖该方法的特定表单的消息 我找不到任何关于
WM\u CALL
的信息,因为您必须将窗口消息指定为整数(通常为十六进制),所以这取决于您
(1) :
(2) :
只需重写WndProc()方法。您的回答为我节省了很多时间,谢谢!!工作出色。
using System;
using System.Windows.Forms;
using System.Runtime.InteropServices;
public partial class Form1 : Form
{
[DllImport("user32")]
public static extern bool PostMessage(IntPtr hwnd, int msg, IntPtr wparam, IntPtr lparam);
//private const int WM_xxx = 0x0;
//you have to know for which event you wanna register
public Form1()
{
InitializeComponent();
IntPtr hWnd = this.Handle;
Application.AddMessageFilter(new MyMessageFilter());
PostMessage(hWnd, WM_xxx, IntPtr.Zero, IntPtr.Zero);
}
}
class MyMessageFilter : IMessageFilter
{
//private const int WM_xxx = 0x0;
public bool PreFilterMessage(ref Message m)
{
if (m.Msg == WM_xxx)
{
//code to handle the message
}
return false;
}
}
using System;
using System.Windows.Forms;
using System.Runtime.InteropServices;
public partial class Form 1 {
[DllImport("user32")]
public static extern bool PostMessage(IntPtr hwnd, int msg, IntPtr wparam, IntPtr lparam);
//private const int WM_xxx = 0x0;
//you have to know for which event you wanna register
public Form1()
{
InitializeComponent();
IntPtr hWnd = this.Handle;
PostMessage(hWnd, WM_xxx, IntPtr.Zero, IntPtr.Zero);
}
protected override void WndProc(ref Message m)
{
if (m.Msg == WMK_xxx)
{
//code to handle the message
}
}
}