我有一个窗口,我只知道我需要激活,调整大小并放置在屏幕左上角的标题(例如记事本).
因此,经过对MSDN和论坛的一些研究,我发现了一些应该实现这一目标的功能.我使用FindWindow按标题获取句柄,然后我使用GetWindowPlacement来查看记事本是否被最小化(如果没有,那么我只使用AppActivate,只需要激活它,如果它没有最小化).如果窗口是最小化的,那么我尝试使用SetWindowPlacement激活,调整大小并在一个命令中移动它.
这是我的代码:
因此,经过对MSDN和论坛的一些研究,我发现了一些应该实现这一目标的功能.我使用FindWindow按标题获取句柄,然后我使用GetWindowPlacement来查看记事本是否被最小化(如果没有,那么我只使用AppActivate,只需要激活它,如果它没有最小化).如果窗口是最小化的,那么我尝试使用SetWindowPlacement激活,调整大小并在一个命令中移动它.
这是我的代码:
<DllImport("user32.dll",SetLastError:=True,CharSet:=CharSet.Auto)> _ Private Shared Function FindWindow( _ ByVal lpClassName As String,_ ByVal lpWindowName As String) As IntPtr End Function <DllImport("user32.dll")> _ Private Shared Function GetWindowPlacement(ByVal hWnd As IntPtr,ByRef lpwndpl As WINDOWPLACEMENT) As Boolean End Function <DllImport("user32.dll")> _ Private Shared Function SetWindowPlacement(ByVal hWnd As IntPtr,ByRef lpwndpl As WINDOWPLACEMENT) As Boolean End Function Private Structure RECT Public Left As Integer Public Top As Integer Public Right As Integer Public Bottom As Integer Public Sub New(ByVal X As Integer,ByVal Y As Integer,ByVal X2 As Integer,ByVal Y2 As Integer) Me.Left = X Me.Top = Y Me.Right = X2 Me.Bottom = Y2 End Sub End Structure Private Structure WINDOWPLACEMENT Public Length As Integer Public flags As Integer Public showCmd As ShowWindowCommands Public ptMinPosition As POINTAPI Public ptMaxPosition As POINTAPI Public rcNormalPosition As RECT End Structure Enum ShowWindowCommands As Integer Hide = 0 Normal = 1 ShowMinimized = 2 Maximize = 3 ShowMaximized = 3 ShowNoActivate = 4 Show = 5 Minimize = 6 ShowMinNoActive = 7 ShowNA = 8 Restore = 9 ShowDefault = 10 ForceMinimize = 11 End Enum Public Structure POINTAPI Public X As Integer Public Y As Integer Public Sub New(ByVal X As Integer,ByVal Y As Integer) Me.X = X Me.Y = Y End Sub End Structure
实际执行在这里:
Dim wp As WINDOWPLACEMENT wp.Length = Marshal.SizeOf(wp) GetWindowPlacement(FindWindow(Nothing,"Notepad"),wp) If wp.showCmd = ShowWindowCommands.ShowMinimized Then Dim wp2 As WINDOWPLACEMENT wp2.showCmd = ShowWindowCommands.ShowMaximized wp2.ptMinPosition = wp.ptMinPosition wp2.ptMaxPosition = New POINTAPI(0,0) wp2.rcNormalPosition = New RECT(0,816,639) 'this is the size I want wp2.flags = wp.flags wp2.Length = Marshal.SizeOf(wp2) SetWindowPlacement(FindWindow(Nothing,wp2) Else AppActivate("Notepad")
所以我尝试运行它,但它只是激活窗口,而矩形也应该调整它的大小.那么我做错了什么?有没有更简单的方法来实现这一切?很抱歉这篇冗长的帖子
解决方法
我不得不做类似的事情,并使用user32.dll的SetWindowPos函数
这是一个vb.net实现:
Imports System Imports System.Runtime.InteropServices Imports System.Diagnostics Public Class HookUtil Public Const SWP_NOMOVE As Short = &H2 Public Const SWP_NOSIZE As Short = 1 Public Const SWP_NOZORDER As Short = &H4 Public Const SWP_SHOWWINDOW As Short = &H40 Shared ReadOnly HWND_BOTTOM As IntPtr = New IntPtr(1) <DllImport("user32.dll",EntryPoint:="SetWindowPos")> _ Public Shared Function SetWindowPos( _ hWnd As IntPtr,_ hWndInsertAfter As IntPtr,_ x As Int32,y As Int32,cx As Int32,cy As Int32,wFlags As Int32) As IntPtr End Function Public Shared Sub HookWindow() Dim Processes As Process() = Process.GetProcessesByName("Notepad") For Each p As Process In Processes Dim handle As IntPtr = p.MainWindowHandle If handle <> IntPtr.Zero Then SetWindowPos(handle,HWND_BOTTOM,200,SWP_NOZORDER Or SWP_NOSIZE Or SWP_SHOWWINDOW) End If Next End Sub End Class
你打电话给:
HookUtil.HookWindow()
这是一个C#实现:
using System; using System.Runtime.InteropServices; using System.Diagnostics; namespace csharpsandbox { public class HookUtil { // hooks window handle and repositions to specified coords [DllImport("user32.dll",EntryPoint = "SetWindowPos")] public static extern IntPtr SetWindowPos(IntPtr hWnd,IntPtr hWndInsertAfter,int x,int Y,int cx,int cy,int wFlags); [DllImport("kernel32.dll")] static extern IntPtr LoadLibrary(string lpFileName); const short SWP_NOMOVE = 0X2; const short SWP_NOSIZE = 1; const short SWP_NOZORDER = 0X4; const int SWP_SHOWWINDOW = 0x0040; static readonly IntPtr HWND_BOTTOM = new IntPtr(1); public static void HookWindow() { Process[] parray = System.Diagnostics.Process.GetProcessesByName("Notepad"); foreach (Process p in parray) { IntPtr handle = p.MainWindowHandle; if (handle != IntPtr.Zero) { SetWindowPos(handle,SWP_NOZORDER | SWP_NOSIZE | SWP_SHOWWINDOW); } } } } }
你打电话给:
HookUtil.HookWindow();
显然,这里的值(进程名称,x,y坐标)是硬编码的.为了使这个更有用,你想要使那些可设置.
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