wxWidget入門（七）
阿新 • • 發佈：2018-11-11
這一期講一講自定義對話方塊
如下圖所示是這一期的對話方塊樣式，一個簡單投票對話方塊
要求如下：
- 介面設計規整，簡潔
- 按鈕實現對應功能
- 控制元件幫助提示
- 投票要求：小於18歲不能投票，投票欄變灰色。
①根據任務要求，列出類框架：
class PersonalRecordDialog : public wxDialog { public: PersonalRecordDialog(const wxString & title); //按鈕對應事件 void OnOk(wxCommandEvent & event); void OnReset(wxCommandEvent & event); void OnCancel(wxCommandEvent & event); void OnHelp(wxCommandEvent & event); private: wxString m_name; //參選人名 int m_age; //參選人年齡 int m_sex; //參選人性別 bool m_vote; //是否投票 private: bool TransferDataToWindow(); //將資料顯示到對應控制元件 bool TransferDataFromWindow(); //獲取控制元件資料 void Init(); //初始化對話方塊 void OnVoteUpdate(wxUpdateUIEvent & event);//控制18歲以下不能投票 void SetDialogHelp(); //設定相關控制元件提示 public: void SetName(const wxString &name) {m_name = name;} wxString GetName() const {return m_name;} void SetAge(int age) {m_age = age;} int GetAge() const {return m_age;} void SetSex(bool sex) {sex ? m_sex = 1 : m_sex = 0;} bool GetSex() const {return m_sex == 1;} void SetVote(bool vote) {m_vote = vote;} bool GetVote() const {return m_vote;} };
②根據框架編寫相應內容：
1、構造畫出對話方塊介面
PersonalRecordDialog::PersonalRecordDialog(const wxString & title) :wxDialog(NULL, -1, title, wxPoint(-1, -1), wxSize(400, 240)) { //設定底部畫布 wxPanel * panel = new wxPanel(this, -1); //設定佈局 為垂直 wxBoxSizer * vbox = new wxBoxSizer(wxVERTICAL); //說明標籤控制元件 wxStaticText * t = new wxStaticText(panel, -1, wxT("Please enter your name, age and sex, and specify whether you \nwish to vote in a general election")); vbox->Add(t, 0, wxALIGN_LEFT | wxALL, 5);//新增到佈局 左對齊 四周距離5 vbox->Add(5, 5, 0, wxALIGN_CENTER_VERTICAL | wxALL, 5);//新增空行 wxStaticText *t_name = new wxStaticText(panel, -1,//名字標籤控制元件 wxT("Name")); vbox->Add(t_name, 0, wxALIGN_LEFT | wxALL, 5); wxTextCtrl * tc = new wxTextCtrl(panel, ID_NAME, wxT(""));//名字輸入框 vbox->Add(tc, 0, wxALIGN_LEFT | wxALL, 5); wxBoxSizer *hbox1 = new wxBoxSizer(wxHORIZONTAL); wxBoxSizer *hbox2 = new wxBoxSizer(wxHORIZONTAL); wxStaticText * t_age = new wxStaticText(panel, -1, wxT("&Age")); //選擇年齡控制元件 範圍0 ~ 120 初始化為25 wxSpinCtrl * spin = new wxSpinCtrl(panel, ID_SAGE ,wxEmptyString, wxDefaultPosition, wxSize(60, -1), wxSP_ARROW_KEYS, 0, 120, 25);//年齡選擇框 wxStaticText * t_sex = new wxStaticText(panel, -1, wxT("&Sex")); //選擇性別控制元件 wxString sexStrings[] = { wxT("Male"), wxT("Female") }; wxChoice *sexChoice = new wxChoice(panel, ID_SEX, wxDefaultPosition, wxSize(80, -1), WXSIZEOF(sexStrings), sexStrings, 0);//性別選擇 //投票勾選框 wxCheckBox * vote = new wxCheckBox(panel, ID_VOTE, wxT("&Vote"));//投票選擇 vote->SetValue(true); hbox1->Add(t_age, 0, wxALIGN_CENTER_VERTICAL | wxALL, 5); hbox1->Add(spin, 0, wxALIGN_CENTER_VERTICAL | wxALL, 5); hbox1->Add(t_sex, 0, wxALIGN_CENTER_VERTICAL | wxALL, 5); hbox1->Add(sexChoice, 0, wxALIGN_CENTER_VERTICAL | wxALL, 5); hbox1->Add(100, 5, 1, wxALIGN_CENTER_VERTICAL | wxALL, 5); hbox1->Add(vote, 0, wxALIGN_CENTER_VERTICAL | wxALL, 5); vbox->Add(hbox1); //新增一條分割線 wxStaticLine * line = new wxStaticLine(panel, -1, wxDefaultPosition, wxDefaultSize, wxLI_HORIZONTAL); vbox->Add(line, 0, wxGROW | wxALL, 5); wxButton * btn1 = new wxButton(panel, wxID_RESET, wxT("&Reset")); wxButton * btn2 = new wxButton(panel, wxID_OK, wxT("&Ok")); wxButton * btn3 = new wxButton(panel, wxID_CANCEL, wxT("&Cancel")); wxButton * btn4 = new wxButton(panel, -1, wxT("&Help")); Connect(wxID_RESET, wxEVT_COMMAND_BUTTON_CLICKED, wxCommandEventHandler(PersonalRecordDialog::OnReset)); Connect(wxID_OK, wxEVT_COMMAND_BUTTON_CLICKED, wxCommandEventHandler(PersonalRecordDialog::OnOk)); Connect(wxID_CANCEL, wxEVT_COMMAND_BUTTON_CLICKED, wxCommandEventHandler(PersonalRecordDialog::OnCancel)); //連線介面更新事件，為了實現18歲以下不能投票 Connect(ID_VOTE, wxEVT_UPDATE_UI, wxUpdateUIEventHandler(PersonalRecordDialog::OnVoteUpdate)); hbox2->Add(btn1, 0, wxALIGN_CENTER | wxLEFT | wxRIGHT, 5); hbox2->Add(btn2, 0, wxALIGN_CENTER | wxLEFT | wxRIGHT, 5); hbox2->Add(btn3, 0, wxALIGN_CENTER | wxLEFT | wxRIGHT, 5); hbox2->Add(btn4, 0, wxALIGN_CENTER | wxLEFT | wxRIGHT, 5); vbox->Add(hbox2); panel->SetSizer(vbox); SetDialogHelp();//新增幫助設定（成員函式） Centre(); }
2、相應按鈕事件
void PersonalRecordDialog::OnOk(wxCommandEvent & event) { //Validate 檢測控制元件內容是否符合控制元件要求 if(Validate() && TransferDataFromWindow()) { if(IsModal())//如果是模式對話方塊 EndModal(wxID_OK);//結束對話方塊（隱藏）並且返回wxID_OK else//不是模式對話方塊 { SetReturnCode(wxID_OK); this->Show(false); } } } void PersonalRecordDialog::OnReset(wxCommandEvent & event) { Init(); //初始化 介面相關控制元件資料 TransferDataToWindow();//將資料更新到介面上 } void PersonalRecordDialog::OnCancel(wxCommandEvent & event) { if(IsModal()) EndModal(wxID_OK); else { SetReturnCode(wxID_OK); this->Show(false); } } void PersonalRecordDialog::OnHelp(wxCommandEvent & event) { //暫定 } void PersonalRecordDialog::OnVoteUpdate(wxUpdateUIEvent & event) { wxSpinCtrl *ageCtrl = (wxSpinCtrl *)FindWindow(ID_SAGE); if(ageCtrl->GetValue() < 18)//控制年齡小於18時控制元件失效，不檢測 { event.Enable(false); event.Check(false); } else event.Enable(true); }
3、 剩餘成員函式
//初始化資料成員
void PersonalRecordDialog::Init()
{
SetName(wxT("hh"));
SetSex(true);
SetAge(24);
SetVote(true);
}
//將資料成員更新到對應控制元件上
//當前沒有註釋的是簡單實現，註釋的是另一種方法（詳細看程式碼的註釋）
bool PersonalRecordDialog::TransferDataToWindow()
{
wxTextCtrl *nameCtrl = (wxTextCtrl *)FindWindow(ID_NAME);
wxSpinCtrl *ageCtrl = (wxSpinCtrl *)FindWindow(ID_SAGE);
wxChoice *sexCtrl = (wxChoice *)FindWindow(ID_SEX);
wxCheckBox *voteCtrl = (wxCheckBox *)FindWindow(ID_VOTE);
nameCtrl->SetValue(m_name);
ageCtrl->SetValue(m_age);
sexCtrl->SetSelection(m_sex);
voteCtrl->SetValue(m_vote);
/*FindWindow(ID_NAME)->SetValidator(
wxTextValidator(wxFILTER_ALPHA, &m_name));//使用wxTextValidator驗證器使用wxFILTER_ALPHA校驗方法
//後續可以通過SetIncludes 和 SetExcludes 函式那些字元允許和不允許
FindWindow(ID_SAGE)->SetValidator(
wxGenericValidator(&m_age));//使用wxGenericValidator驗證器不對資料驗證，只負責傳輸資料
FindWindow(ID_SEX)->SetValidator(
wxGenericValidator(&m_sex));
FindWindow(ID_VOTE)->SetValidator(
wxGenericValidator(&m_vote));*/
return true;
}
//將介面控制元件內容更新到資料成員
bool PersonalRecordDialog::TransferDataFromWindow()
{
wxTextCtrl *nameCtrl = (wxTextCtrl *)FindWindow(ID_NAME);
wxSpinCtrl *ageCtrl = (wxSpinCtrl *)FindWindow(ID_SAGE);
wxChoice *sexCtrl = (wxChoice *)FindWindow(ID_SEX);
wxCheckBox *voteCtrl = (wxCheckBox *)FindWindow(ID_VOTE);
m_name = nameCtrl->GetValue();
m_age = ageCtrl->GetValue();
m_sex = sexCtrl->GetSelection();
m_vote = voteCtrl->GetValue();
return true;
}
//設定控制元件幫助資訊（懸停提示）
void PersonalRecordDialog::SetDialogHelp()
{
wxString nameHelp = wxT("Enter your full name.");
wxString ageHelp = wxT("Specify your age.");
wxString sexHelp = wxT("Specify your gender, male or female.");
wxString voteHelp = wxT("Check this if you wish to vote.");
FindWindow(ID_NAME)->SetHelpText(nameHelp);
FindWindow(ID_NAME)->SetToolTip(nameHelp);
FindWindow(ID_SAGE)->SetHelpText(ageHelp);
FindWindow(ID_SAGE)->SetToolTip(ageHelp);
FindWindow(ID_SEX)->SetHelpText(sexHelp);
FindWindow(ID_SEX)->SetToolTip(sexHelp);
FindWindow(ID_VOTE)->SetHelpText(voteHelp);
FindWindow(ID_VOTE)->SetToolTip(voteHelp);
}4、例項化app
class MyApp : public wxApp
{
public:
virtual bool OnInit();
};
IMPLEMENT_APP(MyApp)//例項化
bool MyApp::OnInit()
{
PersonalRecordDialog *personal = new PersonalRecordDialog(wxT("Personal Record"));
personal->ShowModal();//表示模式對話方塊
return true;
}快去試試把，歡迎大家留言哈