请问怎样在子窗口MDIChild中向父窗口MDI中发消息??

ninyjun2008 2002-07-07 12:12:01
请问怎样在子窗口MDIChild中向父窗口MDI中发消息??
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jishiping 2002-07-07
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这儿 WM_MDIxxx 是MDI的消息,比如是WM_MDITILE WM_MDIACTIVATE。wParam
和lParam 依赖于消息。
SendMessage(Application->MainForm->ClientHandle, WM_MDIxxx, wParam, lParam);
RINGSDK包含界面库和图象库。 本项目为编译环境为VC6,需要先安装platform sdk.不断修改,会陆续上传其他相关文档及DEMO 设置: VC6菜单tools->Options,选择Directoris页,把include,lib目录加入到相应文件列表,如果要调试,需要把libsrc目录下的各个子目录加入到Source files文件列表。 工程依赖几个第三方库,需要先编译livsrc\free_lib下几个目录的工程,然后打开ringsdk.dsw编译。工程都已经设置好了,编译即可。 由于VC的智能提示不能识别界面库里的宏,因此建议安装VA(Visual.Assist) 创建基于RingSDK的工程: 新建一个Win32 Application的工程,不要让VC写任何代码,空的工程。然后选择菜单Project->settings..., 选择C/C++页,Category选择Code Generation,然后在Use run-time library选择: DEBUG选择Debug Multithreaded RELEASE选择MultiThreaded 工程设置完毕,然后可以加入CPP和H文件了。 类库使用: 1、头文件: 头文件包含"ringmain.h"就可以,如果要使用图象库,还需要包含"ringdib.h" 2、窗口类声明: 窗口定义为如下格式: BEGIN_SETUPWINDOW(窗口名,窗口类型) BINNDID(对话框ID) //当窗口类型是对话框才需要写这个宏,且是可选的,即不写也可以 BEGIN_DEF_VAR(初始化标记) //这里定义类成员数据 END_DEF_VAR //这里定义类成员函数 //定义窗口消息处理函数 BEGIN_DEFMSG DEFMSG(消息代码) DEFMSGEX(自定义消息处理函数名) ... DEFCMD(命令处理函数名) ... DEFNOTIFY(通知消息代码) END_DEFMSG(窗口名) END_SETUPWINDOW(窗口名) 这里对上面代码文进行说明: 窗口名:窗口名同时也是该窗口类的对象名,比如窗口名为MainWindow,则该窗口类名为RingWnd_MainWindow, 同时声明了RingWnd_MainWindow* MainWindow=NULL; 以后只要调用MainWindow = NewRingObj(MainWindow);然后MainWindow就可以使用了。 以上代码相当于: class RingWnd_MainWindow { ... } RingWnd_MainWindow* MainWindow=NULL; 类名可以用RINGCLASS(窗口名)宏来得到 窗口类型:为IS_WINDOW,IS_MDIFRAME,IS_MDICHILD,IS_DIALOG,IS_PROPPAGE,IS_PROPSHEET这几个值之一,一看名称就知道,不需要多讲了。 其实这个只是声明了窗口类是从哪个类继承。 初始化标记:为NEED_INIT和NO_INIT两个值之一,指定了是否需要成员数据的初始化,一般成员数据的初始化可以在WM_CREATE消息里完成, 如果需要事先初始化,可以指定NEED_INIT,但是需要在CPP文件实现一个INITWINDOW(窗口名)的函数,进行初始化。 这个BEGIN_DEF_VAR(初始化标记)和END_DEF_VAR是可选的,即可以不写这两个宏,一样可以声明成员数据或函数。 消息代码:窗口消息代码,例:WM_CREATE 自定义消息处理函数名:响应自定义消息的处理函数,这个可以随便取名,例:OnCustomMessage 命令处理函数名:响应菜单命令或控件命令的处理函数,这个可以随便取名,例:OnOpenFile,OnButton1Click 通知消息代码:控件的通知消息代码,例:LVN_SELECTCHANGE 对话框ID:当窗口类型是对话框才需要写这个宏,且是可选的,即不写也可以。写了这句,对话框创建时可以不写参数,例: BEGIN_SETUPWINDOW(DlgAbout,IS_DIALOG) BINDID(IDD_ABOUT) ...
VB窗体控件大小随窗体大小变化自動調整 有时窗体变化后,如改变分辨率后控件大小却不能随之改变。手工代码调整实在麻烦,下面的模块实现自动查找窗体上控件并使其改变大小以适应窗体变化。 在Form的Resize事件调用函数Resize_All就能实现控件自动调整大小,如: Private Sub Form_Resize() Dim H, i As Integer On Error Resume Next Resize_ALL Me 'Me是窗体名,Form1,Form2等等都可以 End Sub 在模块添加以下代码: Public Type ctrObj Name As String Index As Long Parrent As String Top As Long Left As Long Height As Long Width As Long ScaleHeight As Long ScaleWidth As Long End Type Private FormRecord() As ctrObj Private ControlRecord() As ctrObj Private bRunning As Boolean Private MaxForm As Long Private MaxControl As Long Private Const WM_NCLBUTTONDOWN = &HA1 Private Declare Function SendMessage Lib "USER32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long Private Declare Function ReleaseCapture Lib "USER32" () As Long Function ActualPos(plLeft As Long) As Long If plLeft < 0 Then ActualPos = plLeft + 75000 Else ActualPos = plLeft End If End Function Function FindForm(pfrmIn As Form) As Long Dim i As Long FindForm = -1 If MaxForm > 0 Then For i = 0 To (MaxForm - 1) If FormRecord(i).Name = pfrmIn.Name Then FindForm = i Exit Function End If Next i End If End Function Function AddForm(pfrmIn As Form) As Long Dim FormControl As Control Dim i As Long ReDim Preserve FormRecord(MaxForm + 1) FormRecord(MaxForm).Name = pfrmIn.Name FormRecord(MaxForm).Top = pfrmIn.Top FormRecord(MaxForm).Left = pfrmIn.Left FormRecord(MaxForm).Height = pfrmIn.Height FormRecord(MaxForm).Width = pfrmIn.Width FormRecord(MaxForm).ScaleHeight = pfrmIn.ScaleHeight FormRecord(MaxForm).ScaleWidth = pfrmIn.ScaleWidth AddForm = MaxForm MaxForm = MaxForm + 1 For Each FormControl In pfrmIn i = FindControl(FormControl, pfrmIn.Name) If i < 0 Then i = AddControl(FormControl, pfrmIn.Name) End If Next FormControl End Function Function FindControl(inControl As Control, inName As String) As Long Dim i As Long FindControl = -1 For i = 0 To (MaxControl - 1) If ControlRecord(i).Parrent = inName Then If ControlRecord(i).Name = inControl.Name Then On Error Resume Next If ControlRecord(i).Index = inControl.Index Then FindControl = i Exit Function End If On Error GoTo 0 End If End If Next i End Function Function AddControl(inControl As Control, inName As String) As Long ReDim Preserve ControlRecord(MaxControl + 1) On Error Resume Next ControlRecord(MaxControl).Name = inControl.Name ControlRecord(MaxControl).Index = inControl.Index ControlRecord(MaxControl).Parrent = inName If TypeOf inControl Is Line Then ControlRecord(MaxControl).Top = inControl.Y1 ControlRecord(MaxControl).Left = ActualPos(inControl.X1) ControlRecord(MaxControl).Height = inControl.Y2 ControlRecord(MaxControl).Width = ActualPos(inControl.X2) Else ControlRecord(MaxControl).Top = inControl.Top ControlRecord(MaxControl).Left = ActualPos(inControl.Left) ControlRecord(MaxControl).Height = inControl.Height ControlRecord(MaxControl).Width = inControl.Width End If inControl.IntegralHeight = False On Error GoTo 0 AddControl = MaxControl MaxControl = MaxControl + 1 End Function Function PerWidth(pfrmIn As Form) As Long Dim i As Long i = FindForm(pfrmIn) If i < 0 Then i = AddForm(pfrmIn) End If PerWidth = (pfrmIn.ScaleWidth * 100) \ FormRecord(i).ScaleWidth End Function Function PerHeight(pfrmIn As Form) As Double Dim i As Long i = FindForm(pfrmIn) If i < 0 Then i = AddForm(pfrmIn) End If PerHeight = (pfrmIn.ScaleHeight * 100) \ FormRecord(i).ScaleHeight End Function Public Sub ResizeControl(inControl As Control, pfrmIn As Form) On Error Resume Next Dim i As Long Dim widthfactor As Single, heightfactor As Single Dim minFactor As Single Dim yRatio, xRatio, lTop, lLeft, lWidth, lHeight As Long yRatio = PerHeight(pfrmIn) xRatio = PerWidth(pfrmIn) i = FindControl(inControl, pfrmIn.Name) If inControl.Left < 0 Then lLeft = CLng(((ControlRecord(i).Left * xRatio) \ 100) - 75000) Else lLeft = CLng((ControlRecord(i).Left * xRatio) \ 100) End If lTop = CLng((ControlRecord(i).Top * yRatio) \ 100) lWidth = CLng((ControlRecord(i).Width * xRatio) \ 100) lHeight = CLng((ControlRecord(i).Height * yRatio) \ 100) If TypeOf inControl Is Line Then If inControl.X1 < 0 Then inControl.X1 = CLng(((ControlRecord(i).Left * xRatio) \ 100) - 75000) Else inControl.X1 = CLng((ControlRecord(i).Left * xRatio) \ 100) End If inControl.Y1 = CLng((ControlRecord(i).Top * yRatio) \ 100) If inControl.X2 < 0 Then inControl.X2 = CLng(((ControlRecord(i).Width * xRatio) \ 100) - 75000) Else inControl.X2 = CLng((ControlRecord(i).Width * xRatio) \ 100) End If inControl.Y2 = CLng((ControlRecord(i).Height * yRatio) \ 100) Else inControl.Move lLeft, lTop, lWidth, lHeight inControl.Move lLeft, lTop, lWidth inControl.Move lLeft, lTop End If End Sub Public Sub ResizeForm(pfrmIn As Form) Dim FormControl As Control Dim isVisible As Boolean Dim StartX, StartY, MaxX, MaxY As Long Dim bNew As Boolean If Not bRunning Then bRunning = True If FindForm(pfrmIn) < 0 Then bNew = True Else bNew = False End If If pfrmIn.Top < 30000 Then isVisible = pfrmIn.Visible On Error Resume Next If Not pfrmIn.MDIChild Then On Error GoTo 0 ' ' pfrmIn.Visible = False Else If bNew Then StartY = pfrmIn.Height StartX = pfrmIn.Width On Error Resume Next For Each FormControl In pfrmIn If FormControl.Left + FormControl.Width + 200 > MaxX Then MaxX = FormControl.Left + FormControl.Width + 200 End If If FormControl.Top + FormControl.Height + 500 > MaxY Then MaxY = FormControl.Top + FormControl.Height + 500 End If If FormControl.X1 + 200 > MaxX Then MaxX = FormControl.X1 + 200 End If If FormControl.Y1 + 500 > MaxY Then MaxY = FormControl.Y1 + 500 End If If FormControl.X2 + 200 > MaxX Then MaxX = FormControl.X2 + 200 End If If FormControl.Y2 + 500 > MaxY Then MaxY = FormControl.Y2 + 500 End If Next FormControl On Error GoTo 0 pfrmIn.Height = MaxY pfrmIn.Width = MaxX End If On Error GoTo 0 End If For Each FormControl In pfrmIn ResizeControl FormControl, pfrmIn Next FormControl On Error Resume Next If Not pfrmIn.MDIChild Then On Error GoTo 0 pfrmIn.Visible = isVisible Else If bNew Then pfrmIn.Height = StartY pfrmIn.Width = StartX For Each FormControl In pfrmIn ResizeControl FormControl, pfrmIn Next FormControl End If End If On Error GoTo 0 End If bRunning = False End If End Sub Public Sub SaveFormPosition(pfrmIn As Form) Dim i As Long If MaxForm > 0 Then For i = 0 To (MaxForm - 1) If FormRecord(i).Name = pfrmIn.Name Then FormRecord(i).Top = pfrmIn.Top FormRecord(i).Left = pfrmIn.Left FormRecord(i).Height = pfrmIn.Height FormRecord(i).Width = pfrmIn.Width Exit Sub End If Next i AddForm (pfrmIn) End If End Sub Public Sub RestoreFormPosition(pfrmIn As Form) Dim i As Long If MaxForm > 0 Then For i = 0 To (MaxForm - 1) If FormRecord(i).Name = pfrmIn.Name Then If FormRecord(i).Top < 0 Then pfrmIn.WindowState = 2 ElseIf FormRecord(i).Top < 30000 Then pfrmIn.WindowState = 0 pfrmIn.Move FormRecord(i).Left, FormRecord(i).Top, FormRecord(i).Width, FormRecord(i).Height Else pfrmIn.WindowState = 1 End If Exit Sub End If Next i End If End Sub Public Sub Resize_ALL(Form_Name As Form) Dim OBJ As Object For Each OBJ In Form_Name ResizeControl OBJ, Form_Name Next OBJ End Sub Public Sub DragForm(frm As Form) On Local Error Resume Next Call ReleaseCapture Call SendMessage(frm.hwnd, WM_NCLBUTTONDOWN, 2, 0) End Sub

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