C#得到孩子处理使用FindWindowEx按名称和序号 [英] C# get child handles using FindWindowEx by name and ordinal number
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问题描述
根据 http://msdn.microsoft .COM / EN-US /库/ ms633500(v = vs.85)的.aspx 我定义FindWindowEx的功能。
;
函数[DllImport(user32.dll中,字符集= CharSet.Unicode)]
静态外部的IntPtr FindWindowEx(IntPtr的parentHandle,IntPtr的childAfter,串lclassName,串WINDOWTITLE);
现在我能找到的第一按钮控件的句柄(摆脱间谍++名称)设置为childAfter IntPtr.Zero
IntPtr的hWndParent =新的IntPtr(2032496 ); //提供父窗口的句柄
IntPtr的hWndButton = FindWindowEx(hWndParent,IntPtr.Zero,按钮,的String.Empty);
如何获得的第二 第三或该父窗口内的按钮控件的什么把柄?事实是,按钮标题可能会有所不同,所以我不能直接通过名称定义的第四个参数中找到它们。
解决方案
静态的IntPtr FindWindowByIndex(IntPtr的hWndParent,INT指数)
{
如果(指数== 0)
返回hWndParent;
,否则
{
INT克拉= 0;
IntPtr的结果= IntPtr.Zero;
做
{
结果= FindWindowEx(hWndParent,结果,按钮,NULL);
如果(结果= IntPtr.Zero!)
++克拉;
}
,而(CT<&指数放大器;&安培;!结果= IntPtr.Zero);
返回结果;
}
}
使用这样的:
IntPtr的hWndThirdButton = FindWindowByIndex(HWND,3); //为Spy中第三个按钮的手柄+
According to http://msdn.microsoft.com/en-us/library/ms633500(v=vs.85).aspx I define FindWindowEx function.
using System.Runtime.InteropServices;
[DllImport("user32.dll", CharSet=CharSet.Unicode)]
static extern IntPtr FindWindowEx(IntPtr parentHandle, IntPtr childAfter, string lclassName, string windowTitle);
Now I am able to find first handle of "Button" control (get name from Spy++) setting childAfter as IntPtr.Zero.
IntPtr hWndParent = new IntPtr(2032496); // providing parent window handle
IntPtr hWndButton = FindWindowEx(hWndParent, IntPtr.Zero, "Button", string.Empty);
How to get second, third or any handle of "Button" control inside that parent window? The fact is, button titles may vary, so I cannot find them directly by name defining fourth parameter.
解决方案
static IntPtr FindWindowByIndex(IntPtr hWndParent, int index)
{
if (index == 0)
return hWndParent;
else
{
int ct = 0;
IntPtr result = IntPtr.Zero;
do
{
result = FindWindowEx(hWndParent, result, "Button", null);
if (result != IntPtr.Zero)
++ct;
}
while (ct < index && result != IntPtr.Zero);
return result;
}
}
Use like:
IntPtr hWndThirdButton = FindWindowByIndex(hWnd, 3); // handle of third "Button" as shown in Spy++
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