// 子窗口用户句柄
public IntPtr WndMsgProcChildClient(IntPtr hWnd, int msg, IntPtr wParam, IntPtr lParam)
{
IntPtr newPtr;
try
{
IntPtr intPtr = GridNumberForm.CallWindowProc(m_hWndChildClientProcOld, hWnd, msg, wParam, lParam);
if (msg <= 32)
{
//2---窗口被销毁
if (msg == 2)
{
// GWL_WNDPROC// -4 // 为窗口设定一个新的处理函数。
GridNumberForm.SetWindowLong(m_hWndChildClientHandle, -4, m_hWndChildClientProcOld);
m_hWndChildClientProcNew = null;
base.Hide();
}
}
//512移动鼠标
else if (msg != 512)
{
switch (msg)
{
//519按下鼠标中键
case 519:
m_midButtonDown = true;
break;
//520释放鼠标中键
case 520:
m_midButtonDown = false;
//MessageBox.Show("释放中键！");
break;
//521双击鼠标中键
case 521:
//522中键转动(滚轮）
case 522:
DrawGridNumText(false);
break;
}
}
else if (m_midButtonDown)
{
DrawGridNumText(false);
}
newPtr = intPtr;
}
catch (Exception)
{
newPtr = IntPtr.Zero;
}
return(newPtr);
}
// 刷新文档和视图
public void RefreshDocAndView(UIDocument uiDoc)
{
if (uiDoc == null)
{
return;
}
m_uiDoc = uiDoc;
if (m_GridNumShowMag == null)
{
m_GridNumShowMag = new ShowGridNumberManager(uiDoc);
}
else
{
m_GridNumShowMag.RefreshUIDocument(m_uiDoc);
}
IntPtr intPtr = IntPtr.Zero;
try
{
//SendMessageWindows API宏，在WinUser.h中根据是否已定义Unicode被定义为SendMessageW或SendMessageA
//，这两个函数将指定的消息发送到一个或多个窗口。此函数为指定的窗口调用窗口程序，直到窗口程序处理完消息再返回。
//而和函数PostMessage不同，PostMessage是将一个消息寄送到一个线程的消息队列后就立即返回。
//553u 应用程序将WM_MDIGETACTIVE消息发送到多文档界面（MDI）客户端窗口，以检索活动MDI子窗口的句柄。
m_hWndChildHandle = (IntPtr)SendMessage(m_hMDIChildHandle, 553u, 0, 0);
if (m_hWndChildProcNew == null)
{
m_hWndChildProcNew = new GridNumberForm.NewWndProc(WndMsgProcChild);
}
m_hWndChildProcOld = GridNumberForm.SetWindowLong(m_hWndChildHandle, -4, m_hWndChildProcNew);
//转换 String 类写入非托管内存
intPtr = Marshal.StringToHGlobalAnsi("AfxFrameOrView");
EnumChildWindows(m_hWndChildHandle, new CallBack(EnumMDIChildClient), intPtr);
if (m_hWndChildClientProcNew == null)
{
m_hWndChildClientProcNew = new GridNumberForm.NewWndProc(WndMsgProcChildClient);
}
//SetWindowLong该函数用来改变指定窗口的属性
m_hWndChildClientProcOld = GridNumberForm.SetWindowLong(m_hWndChildClientHandle, -4, m_hWndChildClientProcNew);
}
catch (Exception)
{
m_appShowGrid.DrawGridNumber = false;
}
finally
{
//释放非托管的字符串
Marshal.FreeHGlobal(intPtr);
}
}
//子窗口句柄
public IntPtr WndMsgProcChild(IntPtr hWnd, int msg, IntPtr wParam, IntPtr lParam)
{
IntPtr result;
try
{
//CallWindowProc是将消息信息传送给指定的窗口过程的函数。
IntPtr intPtr = GridNumberForm.CallWindowProc(m_hWndChildProcOld, hWnd, msg, wParam, lParam);
//2---窗口被销毁
if (msg != 2)
{
//5---窗口改变大小
if (msg != 5)
{
switch (msg)
{
//532调整窗口大小
//534移动窗口，通过此消息应用程序可以监视窗口大小和位置也可以修改他们
case 532:
case 534:
DrawGridNumText(false);
break;
}
}
else
{
/*MessageBox.Show("窗口大小改变");*/
DrawGridNumText(false);
}
}
else
{
GridNumberForm.SetWindowLong(m_hWndChildHandle, -4, m_hWndChildProcOld);
m_hWndChildProcNew = null;
base.Hide();
}
result = intPtr;
}
catch (Exception)
{
result = IntPtr.Zero;
}
return(result);
}
public static extern IntPtr SetWindowLong(IntPtr hWnd, int nIndex, GridNumberForm.NewWndProc wndproc);
