1.如果在SDI中要调用对话框
a.先插入一个对话框资源;
b.然后在ClassWizards中为其创建一个类。其目的是比较方便为添加按纽和消息响应函数。
c.然后实例化它。在实例化时,必须将其头文件包含进去。
2.创建非模态对话框,注意它不能是局部变量。当点击非模态对话框的OnOK按纽时,它并没有关闭,而是隐藏了。需要调用destroyWindow().
3.一个对象只能一个按纽。为什么?因为在Wincore.cpp的628行有代码 ASSERT(pWnd->m_hWnd == NULL); // only do once而创建后它的m_hWnd就不为0了。此处ASSERT的用法是如果括号里面不为真,则程序崩溃。
4.如何为静态文本框增加消息响应?首先将IDC_STATIC改名。同时还需要将Notify特性复选中。
5.完成加法功能。
a.GetDlgItem();
b.GetDlgItemText();
c.GetDlgItemInt();
d.将IDC_EDIT1关联CEDIT类型变量
e.将IDC_EDIT1关联int型变量。注意调用 UpdateData();
f. //::SendMessage(GetDlgItem(IDC_EDIT1)->m_hWnd,WM_GETTEXT,10,(LPARAM)ch1);
//::SendMessage(m_edit1.m_hWnd,WM_GETTEXT,10,(LPARAM)ch1);
//GetDlgItem(IDC_EDIT1)->SendMessage(WM_GETTEXT,10,(LPARAM)ch1);
m_edit1.SendMessage(WM_GETTEXT,10,(LPARAM)ch1);
g. SendDlgItemMessage(IDC_EDIT1,WM_GETTEXT,10,(LPARAM)ch1);
SendDlgItemMessage(IDC_EDIT2,WM_GETTEXT,10,(LPARAM)ch2);
6.点击按纽改变窗口尺寸
if(GetDlgItemText(IDC_BUTTON2,str),str=="收缩<<")
{
SetDlgItemText(IDC_BUTTON2,"扩展>>");
static CRect rectLarge;
static CRect rectSmall;
if(rectLarge.IsRectNull())
{
CRect rectSeparator;
GetWindowRect(&rectLarge);
GetDlgItem(IDC_SEPARATOR)->GetWindowRect(&rectSeparator); rectSmall.left=rectLarge.left;
rectSmall.top=rectLarge.top;
rectSmall.right=rectLarge.right;
rectSmall.bottom=rectSeparator.bottom;
}
if(str=="收缩<<")
{
SetWindowPos(NULL,0,0,rectSmall.Width(),rectSmall.Height(),
SWP_NOMOVE | SWP_NOZORDER);
}
else
{
SetWindowPos(NULL,0,0,rectLarge.Width(),rectLarge.Height(),
SWP_NOMOVE | SWP_NOZORDER);
}
7.回车时将输入焦点移动到下一个控件
SetWindowLong()改变窗口的属性。
方法1:
改变控件的回调函数,注意IDC_EDIT1的MultiLine要复选上。
WNDPROC prevProc;
LRESULT CALLBACK WinSunProc(
HWND hwnd, // handle to window
UINT uMsg, // message identifier
WPARAM wParam, // first message parameter
LPARAM lParam // second message parameter
)
{
if(uMsg==WM_CHAR && wParam==0x0d)
{
//::SetFocus(::GetNextWindow(hwnd,GW_HWNDNEXT));
//SetFocus(::GetWindow(hwnd,GW_HWNDNEXT));
CString str;
str.Format("%d",hwnd);
AfxMessageBox(str);//, UINT nType = MB_OK, UINT nIDHelp = 0 );
// AfxGetApp()->
SetFocus(::GetNextDlgTabItem(::GetParent(hwnd),hwnd,FALSE));
return 1;
}
else
{
return prevProc(hwnd,uMsg,wParam,lParam);
}
}
BOOL CTestDlg::OnInitDialog()
{
CDialog::OnInitDialog();
// TOD Add extra initialization here
prevProc=(WNDPROC)SetWindowLong(GetDlgItem(IDC_EDIT1)->m_hWnd,GWL_WNDPROC,
(LONG)WinSunProc);//设置回调函数
return TRUE; // return TRUE unless you set the focus to a control
// EXCEPTION: OCX Property Pages should return FALSE
}
方法2:
在OnOK响应函数中加入代码
//GetDlgItem(IDC_EDIT1)->GetNextWindow()->SetFocus();
//GetFocus()->GetNextWindow()->SetFocus();
//GetFocus()->GetWindow(GW_HWNDNEXT)->SetFocus();
GetNextDlgTabItem(GetFocus())->SetFocus();
显示一个模态对话框:
显示一个非模态对话框:
void CMyDialogView::OnShowmenue() { // TODO: Add your command handler code here /*CTestDialog cdlg; cdlg.DoModal();*/ CTestDialog *cdlg=new CTestDialog();//这里可以设置成成员变量,指针定义,堆栈跟程序一样的声明周期 cdlg->Create(IDD_DIALOG1,NULL); cdlg->ShowWindow(SW_NORMAL); }
下面两端代码的效果是一样的:
void CTestDialog::OnButton() { // TODO: Add your control notification handler code here if(!bIsCreate) { m_btn.Create("按钮",BS_PUSHBUTTON|WS_VISIBLE|WS_CHILD,CRect(0,0,100,80),this,123); bIsCreate=TRUE; } else { m_btn.DestroyWindow(); bIsCreate=FALSE; } /*if(!m_btn.m_hWnd) { m_btn.Create("按钮",BS_PUSHBUTTON|WS_VISIBLE|WS_CHILD,CRect(0,0,100,80),this,123); } else { m_btn.DestroyWindow(); }*/ }
几种访问控件的方式:
拉控件:
利用
调整位置
改变了静态文本的ID,才能添加事件
修改了Notify才能在事件中,改变文本的内容
方法一:
void CTestDialog::OnNumber1() { // TODO: Add your control notification handler code here CString str; GetDlgItem(ID_NUMBER1)->GetWindowText(str); if(str=="number1:") { GetDlgItem(ID_NUMBER1)->SetWindowText("数值1:"); } else { GetDlgItem(ID_NUMBER1)->SetWindowText("number1:"); } }
方法二:
int num1,num2,num3; char ch1[8],ch2[8],ch3[9]; GetDlgItem(IDC_EDIT1)->GetWindowText(ch1,8); GetDlgItem(IDC_EDIT2)->GetWindowText(ch2,8); num1=atoi(ch1);//将字符串转化为整数 num2=atoi(ch2); num3=num1+num2; itoa(num3,ch3,10);//将整数转化为字符串 GetDlgItem(IDC_EDIT3)->SetWindowText(ch3);
方法三:
TCHAR ch1[8],ch2[8],ch3[9]; GetDlgItemText(IDC_EDIT1,ch1,8); GetDlgItemText(IDC_EDIT2,ch2,8); int num1=atoi(ch1); int num2=atoi(ch2); int num3=num1+num2; itoa(num3,ch3,10); SetDlgItemText(IDC_EDIT3,ch3);
方法四:
数值关联:
UpdateData();//默认参数是TRUE,不直接调用DodataExchange函数 m_num3=m_num1+m_num2; UpdateData(FALSE);
方法五:
控制关联:
TCHAR ch1[9],ch2[9],ch3[9]; int num1,num2,num3; m_edit1.GetWindowText(ch1,9); m_edit2.GetWindowText(ch2,9); num1=atoi(ch1); num2=atoi(ch2); num3=num1+num2; itoa(num3,ch3,10); m_edit3.SetWindowText(ch3);
方法六:
int num1=GetDlgItemInt(IDC_EDIT1); int num2=GetDlgItemInt(IDC_EDIT2); int num3=num1+num2; SetDlgItemInt(IDC_EDIT3,num3);
方法七:
/*TCHAR ch1[10],ch2[10],ch3[10]; ::SendMessage(GetDlgItem(IDC_EDIT1)->m_hWnd,WM_GETTEXT,10,(LPARAM)ch1); ::SendMessage(GetDlgItem(IDC_EDIT2)->m_hWnd,WM_GETTEXT,10,(LPARAM)ch2); int num1=atoi(ch1); int num2=atoi(ch2); int num3=num1+num2; itoa(num3,ch3,10); ::SendMessage(GetDlgItem(IDC_EDIT3)->m_hWnd,WM_SETTEXT,0,(LPARAM)ch3);*/ /*TCHAR ch1[10],ch2[10],ch3[10]; GetDlgItem(IDC_EDIT1)->SendMessage(WM_GETTEXT,10,(LPARAM)ch1); GetDlgItem(IDC_EDIT2)->SendMessage(WM_GETTEXT,10,(LPARAM)ch2); int num1=atoi(ch1); int num2=atoi(ch2); int num3=num1+num2; itoa(num3,ch3,10); SendDlgItemMessage(IDC_EDIT3,WM_SETTEXT,0,(LPARAM)ch3); SendDlgItemMessage(IDC_EDIT3,EM_SETSEL,0,2); GetDlgItem(IDC_EDIT3)->SetFocus();*/ TCHAR ch1[10],ch2[10],ch3[10]; SendDlgItemMessage(IDC_EDIT1,WM_GETTEXT,10,(LPARAM)ch1); SendDlgItemMessage(IDC_EDIT2,WM_GETTEXT,10,(LPARAM)ch2); int num1=atoi(ch1); int num2=atoi(ch2); int num3=num1+num2; itoa(num3,ch3,10); SendDlgItemMessage(IDC_EDIT3,WM_SETTEXT,0,(LPARAM)ch3); SendDlgItemMessage(IDC_EDIT3,EM_SETSEL,0,2); GetDlgItem(IDC_EDIT3)->SetFocus();
伸缩效果:
拉入一个picture:
void CTestDialog::OnShensuo() { // TODO: Add your control notification handler code here CString cst; if(GetDlgItemText(ID_SHENSUO,cst),cst=="缩小<<") { SetDlgItemText(ID_SHENSUO,"扩展>>"); } else { SetDlgItemText(ID_SHENSUO,"缩小<<"); } static CRect crectLarge,crectSmall; if(crectLarge.IsRectNull()) { GetWindowRect(&crectLarge); CRect ctemp; GetDlgItem(IDC_SEPARATOR)->GetWindowRect(&ctemp); crectSmall.left=crectLarge.left; crectSmall.top=crectLarge.top; crectSmall.right=crectLarge.right; crectSmall.bottom=ctemp.bottom; } if(cst=="缩小<<") { SetWindowPos(NULL,0,0,crectSmall.Width(),crectSmall.Height(),SWP_NOZORDER|SWP_NOMOVE); } else { SetWindowPos(NULL,0,0,crectLarge.Width(),crectLarge.Height(),SWP_NOZORDER|SWP_NOMOVE); } }
回车响应SetFocus()只能一次 multiline
WNDPROC prevProc; LRESULT CALLBACK DialogProc( HWND hwnd, // handle to window UINT uMsg, // message identifier WPARAM wParam, // first message parameter LPARAM lParam // second message parameter ) { if(uMsg==WM_CHAR && wParam==0x0d) { //::SetFocus(::GetNextWindow(hwnd,GW_HWNDNEXT)); //::SetFocus(::GetWindow(hwnd,GW_HWNDNEXT)); ::SetFocus(::GetNextDlgTabItem(GetParent(hwnd),hwnd,FALSE)); return 1; } else { return prevProc(hwnd,uMsg,wParam,lParam); } } BOOL CTestDialog::OnInitDialog() { CDialog::OnInitDialog(); // TODO: Add extra initialization here prevProc=(WNDPROC)SetWindowLong(GetDlgItem(IDC_EDIT1)->m_hWnd,GWL_WNDPROC,(LONG)DialogProc); return TRUE; // return TRUE unless you set the focus to a control // EXCEPTION: OCX Property Pages should return FALSE }
void CTestDlg::OnOK() { // TODO: Add extra validation here //GetDlgItem(IDC_EDIT1)->GetNextWindow()->SetFocus(); //GetFocus()->GetNextWindow()->SetFocus(); //GetFocus()->GetWindow(GW_HWNDNEXT)->SetFocus(); GetNextDlgTabItem(GetFocus())->SetFocus(); // CDialog::OnOK(); }