高手们来看看

Question

 [DllImport("user32.dll", SetLastError = true)]
        static extern Rectangle GetWindowRect(IntPtr hWnd, out  RECT lpRect);
        internal struct RECT        
      {
            public int left;
            public int top;
            public int right;
            public int bottom;
        }
        private void button1_Click(object sender, EventArgs e)
        {
            IntPtr vHandle = FindWindow("Shell_TrayWnd", null);
            vHandle = FindWindowEx(vHandle, IntPtr.Zero, "ToolbarWindow32", null);
            RECT rect = new RECT();
            GetWindowRect(vHandle, out  rect);
            MessageBox.Show(string.Format("x={0}, y={1}, width={2}, height={3}", rect.left, rect.top, rect.right, rect.bottom));
}我想得到ToolbarWindow32大小.怎么得出来的全是0呢
这样写GetWindowRect(this.Handle, out  rect);得到的也是0

Answer 1

IntPtr vHandle = FindWindow("Shell_TrayWnd", null);
            vHandle = FindWindowEx(vHandle, IntPtr.Zero, "ToolbarWindow32", null);
单步调试vHandle=0

Answer 2

("Shell_TrayWnd",  这个 是你当前窗体的哪个名称. 你确实是否对了?

Answer 3

GetWindowRect(this.Handle, out  rect);这样能得到句柄.但得到的也是0

Answer 4

vHandle = 0那当然也是0啦 

Answer 5

Shell_TrayWnd这个是托盘的类名啊

Answer 6

?? 比如 我打开你这个网址,获取这个窗体的进程句柄
FindWindow("高手们来看看-Windows Internet Explorer", null);

Answer 7

MessageBox.Show(string.Format("x={0}, y={1}, width={2}, height={3}", rect.left, rect.top, rect.right, rect.bottom));怎么都是0呢

Answer 8

问题应该在这：不是在第2层上，ToolbarWindow32窗口应该是第四层上。IntPtr vHandle = FindWindow("Shell_TrayWnd", null);
vHandle = FindWindowEx(vHandle, IntPtr.Zero, "TrayNotifyWnd", null);
vHandle = FindWindowEx(vHandle, IntPtr.Zero, "SysPager", null);
vHandle = FindWindowEx(vHandle, IntPtr.Zero, "ToolbarWindow32", null);
RECT rect = new RECT();
GetWindowRect(vHandle, ref  rect);
MessageBox.Show(str+string.Format("x={0}, y={1}, width={2}, height={3}", rect.left, rect.top, rect.right, rect.bottom));

Answer 9

１２楼代码在 WINXP + VS2005测试通过。你可以用VS2005中的spy++工具查看。

Answer 10

我在WINXP + VS2005测试 报错GetWindowRect(vHandle, ref  rect);
对 PInvoke 函数“WindowsApplication2!WindowsApplication2.Form1::GetWindowRect”的调用导致堆栈不对称。原因可能是托管的 PInvoke 签名与非托管的目标签名不匹配。请检查 PInvoke 签名的调用约定和参数与非托管的目标签名是否匹配。
在vista+VS2005测试结果是显示0 0 0 0
全是0

Answer 11

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
namespace WindowsApplication1
{
    public partial class Form1 : Form
    {
        
        public Form1()
        {
            InitializeComponent();
            
        }
        public struct RECT
        {
            public int left;
            public int top;
            public int right;
            public int bottom;
        }
        [DllImport("user32.DLL")]
        public static extern IntPtr FindWindow(string lpszClass, string lpszWindow);
        [DllImport("user32.DLL")]
        public static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass, string lpszWindow);
        [DllImport("user32.dll", SetLastError = true)]
        static extern Rectangle GetWindowRect(IntPtr hWnd, ref  RECT rect);
        private void button1_Click(object sender, EventArgs e)
        {
            IntPtr vHandle = FindWindow("Shell_TrayWnd", null);
            vHandle = FindWindowEx(vHandle, IntPtr.Zero, "TrayNotifyWnd", null);
            vHandle = FindWindowEx(vHandle, IntPtr.Zero, "SysPager", null);
            vHandle = FindWindowEx(vHandle, IntPtr.Zero, "ToolbarWindow32", null);
            RECT rect = new RECT();
            GetWindowRect(vHandle, ref  rect);
            MessageBox.Show(string.Format("x={0}, y={1}, width={2}, height={3}", rect.left, rect.top, rect.right, rect.bottom));
        }
    }
}
是不是哪写错了啊.这是全部代码

Answer 12

FindWindow 不要使用这个，enumwindows不可以嘛？

Answer 13

GetWindowRect 声明类型不对，应该是bool
[DllImport("user32.dll")]
static extern IntPtr FindWindow(string lpClassName, string lpWindowName);[DllImport("user32.dll")]
static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass, string lpszWindow);[DllImport("user32.dll")]
public static extern bool GetWindowRect(IntPtr hWnd, ref RECT lpRect);public struct RECT
{
    public int left;
    public int top;
    public int right;
    public int bottom;
}private void button1_Click(object sender, EventArgs e)
{
    IntPtr vHandle = FindWindow("Shell_TrayWnd", null);
    vHandle = FindWindowEx(vHandle, IntPtr.Zero, "TrayNotifyWnd", null);
    vHandle = FindWindowEx(vHandle, IntPtr.Zero, "SysPager", null);
    vHandle = FindWindowEx(vHandle, IntPtr.Zero, "ToolbarWindow32", null);
    RECT rect = new RECT();
    GetWindowRect(vHandle, ref  rect);
    MessageBox.Show(string.Format("x={0}, y={1}, width={2}, height={3}", rect.left, rect.top, rect.right, rect.bottom));
}