GacUI学习（一）之高仿系统记事本（二）
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上篇《GacUI学习（一）之高仿系统记事本（一）》已经将全局排版布局搞定了，本篇将创建菜单，并进行处理菜单事件。
记事本菜单主要有文件、编辑、格式、查看、帮助这五个，故可以在TextBoxEditorWindow类中添加一个GuiToolstripMenuBar类型的主菜单（MainMenu）用来放置五个GuiToolstripButton类型的菜单，然后每个GuiToolstripButton类的菜单里面再次添加相应的GuiToolstripButton类的子菜单。具体代码如下
1 private: 2 3 //GuiControls 4 GuiToolstripMenuBar* MainMenu; //主菜单 5 GuiToolstripButton* FileMenu; //"文件"菜单 6 GuiToolstripButton* NewMenu; //"新建"菜单 7 GuiToolstripButton* OpenMenu; //"打开"菜单 8 GuiToolstripButton* SaveMenu; //"保存"菜单 9 GuiToolstripButton* SaveAsMenu; //"另存为"菜单 10 GuiToolstripButton* SetPageMenu; //"页面设置"菜单 11 GuiToolstripButton* PrintMenu; //"打印"菜单 12 GuiToolstripButton* ExitMenu; //"退出"菜单 13 14 GuiToolstripButton* EditMenu; //"编辑"菜单 15 GuiToolstripButton* UndoMenu; //"撤销"菜单 16 GuiToolstripButton* CutMenu; //"剪切"菜单 17 GuiToolstripButton* CopyMenu; //"复制"菜单 18 GuiToolstripButton* PasteMenu; //"粘贴"菜单 19 GuiToolstripButton* DeleteMenu; //"删除"菜单 20 GuiToolstripButton* FindMenu; //"查找"菜单 21 GuiToolstripButton* FindNextMenu; //"查找下一个"菜单 22 GuiToolstripButton* ReplaceMenu; //"替换"菜单 23 GuiToolstripButton* GotoMenu; //"转到"菜单 24 GuiToolstripButton* SelectAllMenu; //"全选"菜单 25 GuiToolstripButton* DateMenu; //"时间/日期"菜单 26 27 GuiToolstripButton* FormatMenu; //"格式"菜单 28 GuiToolstripButton* AutoWrapMenu; //"自动换行" 29 GuiToolstripButton* FontTypeMenu; //"字体" 30 31 GuiToolstripButton* ViewMenu; //"查看"菜单 32 GuiToolstripButton* StatusBarMenu; //"状态栏" 33 34 GuiToolstripButton* HelpMenu; //"帮助"菜单 35 GuiToolstripButton* AboutMenu; //"关于" 36 37 GuiMultilineTextBox* MainTextBox; //最主要的一个多行编辑框
具体意义可以参见注释，因为菜单事件最后会设计中间的编辑框（MainTextBox）的操作，所以我们本篇也将创建出中间的编辑框。按照从上往下的顺序，先创建菜单，同样在构造函数中
1 //下面自创一个菜单栏
2 {
3 GuiCellComposition* MainMenuCell = new GuiCellComposition;
4 table->AddChild(MainMenuCell);
5 MainMenuCell->SetSite(0, 0, 1, 1);
6
7 //创建主菜单
8 GuiToolstripMenuBar* MainMenu = g::NewMenuBar();
9 MainMenu->GetBoundsComposition()->SetMinSizeLimitation(GuiGraphicsComposition::LimitToElementAndChildren);
10 MainMenu->GetBoundsComposition()->SetAlignmentToParent(Margin(0, 0, 0, 0));
11
12 MainMenuCell->AddChild(MainMenu->GetBoundsComposition());
13 //文件菜单
14 {
15 FileMenu = g::NewMenuBarButton();
16 FileMenu->SetText(L"文件(F)");
17 FileMenu->SetAlt(L"F");
18 MainMenu->GetToolstripItems().Add(FileMenu);
19
20 //文件子菜单
21 {
22 //"新建"菜单项
23 NewMenu = g::NewMenuItemButton();
24 NewMenu->SetText(L"新建(M)");
25 NewMenu->SetAlt(L"N");
26 NewMenu->Clicked.AttachMethod(this, &TextBoxEditorWindow::NewMenu_OnClicked);
27 FileMenu->EnsureToolstripSubMenu()->GetToolstripItems().Add(NewMenu);
28 //"打开"菜单项
29 OpenMenu = g::NewMenuItemButton();
30 OpenMenu->SetText(L"打开(O)...");
31 OpenMenu->SetAlt(L"O");
32 OpenMenu->Clicked.AttachMethod(this, &TextBoxEditorWindow::OpenMenu_OnClicked);
33 FileMenu->EnsureToolstripSubMenu()->GetToolstripItems().Add(OpenMenu);
34 //"保存"菜单项
35 SaveMenu = g::NewMenuItemButton();
36 SaveMenu->SetText(L"保存(S)");
37 SaveMenu->SetAlt(L"S");
38 SaveMenu->Clicked.AttachMethod(this, &TextBoxEditorWindow::SaveMenu_OnClicked);
39 FileMenu->EnsureToolstripSubMenu()->GetToolstripItems().Add(SaveMenu);
40 //"另存为"菜单
41 SaveAsMenu = g::NewMenuItemButton();
42 SaveAsMenu->SetText(L"另存为(A)...");
43 SaveAsMenu->SetAlt(L"A");
44 SaveAsMenu->Clicked.AttachMethod(this, &TextBoxEditorWindow::SaveAsMenu_OnClicked);
45 FileMenu->EnsureToolstripSubMenu()->GetToolstripItems().Add(SaveAsMenu);
46 //分割条
47 GuiControl* FileSplitter1 = g::NewMenuSplitter();
48 FileMenu->EnsureToolstripSubMenu()->GetToolstripItems().Add(FileSplitter1);
49 //"页面设置"菜单
50 SetPageMenu = g::NewMenuItemButton();
51 SetPageMenu->SetText(L"页面设置(U)...");
52 SetPageMenu->SetAlt(L"U");
53 FileMenu->EnsureToolstripSubMenu()->GetToolstripItems().Add(SetPageMenu);
54 //"打印"菜单
55 PrintMenu = g::NewMenuItemButton();
56 PrintMenu->SetText(L"打印(P)...");
57 PrintMenu->SetAlt(L"P");
58 FileMenu->EnsureToolstripSubMenu()->GetToolstripItems().Add(PrintMenu);
59 //分割条
60 GuiControl* FileSplitter2 = g::NewMenuSplitter();
61 FileMenu->EnsureToolstripSubMenu()->GetToolstripItems().Add(FileSplitter2);
62 //"退出"菜单项
63 ExitMenu = g::NewMenuItemButton();
64 ExitMenu->SetText(L"退出(X)");
65 ExitMenu->SetAlt(L"X");
66 ExitMenu->Clicked.AttachMethod(this, &TextBoxEditorWindow::ExitMenu_OnClicked);
67 FileMenu->EnsureToolstripSubMenu()->GetToolstripItems().Add(ExitMenu);
68 }
69 }
70
71 //编辑菜单
72 {
73 EditMenu = g::NewMenuBarButton();
74 EditMenu->SetText(L"编辑(E)");
75 EditMenu->SetAlt(L"E");
76 MainMenu->GetToolstripItems().Add(EditMenu);
77
78 //编辑子菜单
79 {
80 //"撤销"菜单
81 UndoMenu = g::NewMenuItemButton();
82 UndoMenu->SetText(L"撤销(U)");
83 UndoMenu->SetAlt(L"U");
84 UndoMenu->Clicked.AttachMethod(this, &TextBoxEditorWindow::UndoMenu_OnClicked);
85 EditMenu->EnsureToolstripSubMenu()->GetToolstripItems().Add(UndoMenu);
86
87 GuiControl* EditSplitter1 = g::NewMenuSplitter();
88 EditMenu->EnsureToolstripSubMenu()->GetToolstripItems().Add(EditSplitter1);
89
90 //"剪切"菜单
91 CutMenu = g::NewMenuItemButton();
92 CutMenu->SetText(L"剪切(T)");
93 CutMenu->SetAlt(L"T");
94 CutMenu->Clicked.AttachMethod(this, &TextBoxEditorWindow::CutMenu_OnClicked);
95 EditMenu->EnsureToolstripSubMenu()->GetToolstripItems().Add(CutMenu);
96
97 //"复制"菜单
98 CopyMenu = g::NewMenuItemButton();
99 CopyMenu->SetText(L"复制(C)");
100 CopyMenu->SetAlt(L"C");
101 CopyMenu->Clicked.AttachMethod(this, &TextBoxEditorWindow::CopyMenu_OnClicked);
102 EditMenu->EnsureToolstripSubMenu()->GetToolstripItems().Add(CopyMenu);
103
104 //"粘贴"菜单
105 PasteMenu = g::NewMenuItemButton();
106 PasteMenu->SetText(L"粘贴(P)");
107 PasteMenu->SetAlt(L"P");
108 PasteMenu->Clicked.AttachMethod(this, &TextBoxEditorWindow::PasteMenu_OnClicked);
109 EditMenu->EnsureToolstripSubMenu()->GetToolstripItems().Add(PasteMenu);
110
111 //"删除"菜单
112 DeleteMenu = g::NewMenuItemButton();
113 DeleteMenu->SetText(L"删除(L)");
114 DeleteMenu->SetAlt(L"L");
115 DeleteMenu->Clicked.AttachMethod(this, &TextBoxEditorWindow::DeleteMenu_OnClicked);
116 EditMenu->EnsureToolstripSubMenu()->GetToolstripItems().Add(DeleteMenu);
117
118 GuiControl* EditSplitter2 = g::NewMenuSplitter();
119 EditMenu->EnsureToolstripSubMenu()->GetToolstripItems().Add(EditSplitter2);
120
121 //查找
122 FindMenu = g::NewMenuItemButton();
123 FindMenu->SetText(L"查找(F)...");
124 FindMenu->SetAlt(L"F");
125 FindMenu->SetShortcutText(L"Ctrl+F");
126
127 FindMenu->Clicked.AttachMethod(this, &TextBoxEditorWindow::FindMenu_OnClicked);
128 EditMenu->EnsureToolstripSubMenu()->GetToolstripItems().Add(FindMenu);
129
130 //查找下一个
131 FindNextMenu = g::NewMenuItemButton();
132 FindNextMenu->SetText(L"查找下一个(N)");
133 FindNextMenu->SetAlt(L"N");
134 EditMenu->EnsureToolstripSubMenu()->GetToolstripItems().Add(FindNextMenu);
135
136 //替换
137 ReplaceMenu = g::NewMenuItemButton();
138 ReplaceMenu->SetText(L"替换(R)...");
139 ReplaceMenu->SetAlt(L"R");
140 EditMenu->EnsureToolstripSubMenu()->GetToolstripItems().Add(ReplaceMenu);
141
142 //转到
143 GotoMenu = g::NewMenuItemButton();
144 GotoMenu->SetText(L"转到(G)...");
145 GotoMenu->SetAlt(L"G");
146 EditMenu->EnsureToolstripSubMenu()->GetToolstripItems().Add(GotoMenu);
147
148 GuiControl* EditSplitter3 = g::NewMenuSplitter();
149 EditMenu->EnsureToolstripSubMenu()->GetToolstripItems().Add(EditSplitter3);
150
151 //全选
152 SelectAllMenu = g::NewMenuItemButton();
153 SelectAllMenu->SetText(L"全选(A)");
154 SelectAllMenu->SetAlt(L"A");
155 SelectAllMenu->Clicked.AttachMethod(this, &TextBoxEditorWindow::SelectAllMenu_OnClicked);
156 EditMenu->EnsureToolstripSubMenu()->GetToolstripItems().Add(SelectAllMenu);
157
158 //时间/日期
159 DateMenu = g::NewMenuItemButton();
160 DateMenu->SetText(L"时间/日期(D)");
161 DateMenu->SetAlt(L"D");
162 DateMenu->Clicked.AttachMethod(this, &TextBoxEditorWindow::DateMenu_OnClicked);
163 EditMenu->EnsureToolstripSubMenu()->GetToolstripItems().Add(DateMenu);
164 }
165 }
166
167 //"格式"菜单
168 {
169 FormatMenu = g::NewMenuBarButton();
170 FormatMenu->SetText(L"格式(O)");
171 FormatMenu->SetAlt(L"O");
172 MainMenu->GetToolstripItems().Add(FormatMenu);
173
174 //格式子菜单
175 {
176 //自动换行
177 AutoWrapMenu = g::NewMenuItemButton();
178 AutoWrapMenu->SetText(L"自动换行(W)");
179 AutoWrapMenu->SetAlt(L"W");
180 FormatMenu->EnsureToolstripSubMenu()->GetToolstripItems().Add(AutoWrapMenu);
181
182 //字体
183 FontTypeMenu = g::NewMenuItemButton();
184 FontTypeMenu->SetText(L"字体(F)...");
185 FontTypeMenu->SetAlt(L"F");
186 FormatMenu->EnsureToolstripSubMenu()->GetToolstripItems().Add(FontTypeMenu);
187 }
188 }
189
190 //"查看"菜单
191 {
192 ViewMenu = g::NewMenuBarButton();
193 ViewMenu->SetText(L"查看(V)");
194 ViewMenu->SetAlt(L"V");
195 MainMenu->GetToolstripItems().Add(ViewMenu);
196
197 //查看子菜单
198 {
199 StatusBarMenu = g::NewMenuItemButton();
200 StatusBarMenu->SetText(L"状态栏(S)");
201 StatusBarMenu->SetAlt(L"S");
202
203 ViewMenu->EnsureToolstripSubMenu()->GetToolstripItems().Add(StatusBarMenu);
204 }
205 }
206
207 //"帮助"菜单
208 {
209 HelpMenu = g::NewMenuBarButton();
210 HelpMenu->SetText(L"帮助(H)");
211 HelpMenu->SetAlt(L"H");
212 MainMenu->GetToolstripItems().Add(HelpMenu);
213
214 //帮助子菜单
215 {
216 AboutMenu = g::NewMenuItemButton();
217 AboutMenu->SetText(L"关于GacTextBox");
218 AboutMenu->SetAlt(L"A");
219 HelpMenu->EnsureToolstripSubMenu()->GetToolstripItems().Add(AboutMenu);
220 }
221 }
222 }
按照上篇所述，创建菜单项，首先要创建一个GuiCellComposition，然后将此GuiCellComposition添加到前面创建的table里面，并SetSite()到第一行第一列，因为table本身就只有一列，故设置此GuiCellComposition占据一列。值得一提的是当我们把一个控件或者一个排版布局添加到它的父时，GacUI为自行处理控件，并管理对应的内存，所以此处我们直接new出类，然后添加，后面不需要delete，否则会造成二次delete。GacUI已经处理了常见的快捷键，所以创建菜单时，可以直接在对应的菜单上面SetAlt()即可设置Alt+快捷键。
上面的代码其实没有写完，只实现了对部分菜单的事件处理。对于菜单以及没有用到的按钮类，基本事件就是鼠标点击（Click），此处正是用了Clicked事件，然后将事件与对应的 MenuName_OnClick()“链接”起来，eg:
UndoMenu->Clicked.AttachMethod(this, &TextBoxEditorWindow::UndoMenu_OnClicked);
此处的UndoMenu_OnClicked即为我们自定义的一个事件处理函数，此函数有固定格式,用到了模板，本人对C++模板几乎完全不懂，故不作说明，此处可以固定为
void Func(GuiGraphicsComposition* sender, GuiEventArgs& arguments)
以此类推，对应的代码如下：
1 void TextBoxEditorWindow::UpdateEditMenuStatus()
2 {
3 UndoMenu->SetEnabled(MainTextBox->CanUndo());
4 CutMenu->SetEnabled(MainTextBox->CanCut());
5 CopyMenu->SetEnabled(MainTextBox->CanCopy());
6 PasteMenu->SetEnabled(MainTextBox->CanPaste());
7 DeleteMenu->SetEnabled(MainTextBox->CanCut());
8
9 }
10
11 void TextBoxEditorWindow::window_OnClipboardUpdated(GuiGraphicsComposition * sender, GuiEventArgs & arguments)
12 {
13 UpdateEditMenuStatus();
14 }
15
16 void TextBoxEditorWindow::NewMenu_OnClicked(GuiGraphicsComposition * sender, GuiEventArgs & arguments)
17 {
18 GetCurrentController()->DialogService()->ShowMessageBox(this->GetNativeWindow(),
19 L"功能暂未实现！",
20 L"GacTextBox",
21 INativeDialogService::DisplayOK,
22 INativeDialogService::DefaultFirst,
23 INativeDialogService::IconInformation,
24 INativeDialogService::ModalWindow);
25 }
26
27 void TextBoxEditorWindow::OpenMenu_OnClicked(GuiGraphicsComposition * sender, GuiEventArgs & arguments)
28 {
29 GuiOpenFileDialog* OpenFile = new GuiOpenFileDialog;
30 OpenFile->SetFilter(L"文本文档(*.txt)|*.txt|所有文件（*.*）|*.*");
31 OpenFile->SetDefaultExtension(L"txt");
32 this->AddComponent(OpenFile);
33
34 if (OpenFile->ShowDialog())
35 {
36 CurrentFilePath = OpenFile->GetFileName();
37 this->SelectOpenModeComboBox->SetSelectedIndex(0);
38 //默认以Ansi方式读取文件
39 WString OpenFileData = ReadFileByAnsi(CurrentFilePath);
40 //WString OpenFileData = ReadFileByUTF8(CurrentFilePath);
41 //WString OpenFileData = ReadFileByUTF16LE(CurrentFilePath);
42
43 MainTextBox->SetText(OpenFileData);
44 WString WindowsTitle = CurrentFilePath + L" －GacTextBox";
45 this->SetText(WindowsTitle);
46 }
47
48 this->RemoveComponent(OpenFile);
49 delete OpenFile;
50 }
51
52 void TextBoxEditorWindow::SaveMenu_OnClicked(GuiGraphicsComposition * sender, GuiEventArgs & arguments)
53 {
54 //如果MainTextBox内容发生改变，点击保存按钮才有反应
55 if (bIsTextChanged == true)
56 {
57 //如果CurrentPath为空，则表明没有打开文件
58 if (CurrentFilePath.Length() == 0)
59 {
60 GuiSaveFileDialog* SaveFile = new GuiSaveFileDialog;
61 SaveFile->SetFilter(L"文本文档(*.txt)|*.txt|所有文件（*.*）|*.*");
62 SaveFile->SetDefaultExtension(L"txt");
63 SaveFile->SetTitle(L"保存");
64 this->AddComponent(SaveFile);
65
66 if (SaveFile->ShowDialog())
67 {
68 CurrentFilePath = SaveFile->GetFileName();
69 }
70 else
71 return;
72 this->RemoveComponent(SaveFile);
73 delete SaveFile;
74 }
75
76 bool bResult;
77 if (CurrentEncoding == L"UTF8")
78 {
79 bResult = WriteFileByUTF8(CurrentFilePath, MainTextBox->GetText());
80 }
81 else if (CurrentEncoding == L"UTF16LE")
82 {
83 bResult = WriteFileByUTF16LE(CurrentFilePath, MainTextBox->GetText());
84 }
85 else
86 {
87 bResult = WriteFileByAnsi(CurrentFilePath, MainTextBox->GetText());
88 }
89
90 this->SetText(CurrentFilePath + L" -GacTextBox");
91 }
92 }
93
94 void TextBoxEditorWindow::SaveAsMenu_OnClicked(GuiGraphicsComposition * sender, GuiEventArgs & arguments)
95 {
96 GuiSaveFileDialog* SaveFile = new GuiSaveFileDialog;
97 SaveFile->SetFilter(L"文本文档(*.txt)|*.txt|所有文件（*.*）|*.*");
98 SaveFile->SetDefaultExtension(L"txt");
99 SaveFile->SetTitle(L"保存");
100 SaveFile->SetOptions(INativeDialogService::FileDialogPromptOverwriteFile);
101 this->AddComponent(SaveFile);
102
103 if (SaveFile->ShowDialog())
104 {
105 CurrentFilePath = SaveFile->GetFileName();
106 }
107 else
108 return;
109 this->RemoveComponent(SaveFile);
110 delete SaveFile;
111
112 bool bResult;
113 if (CurrentEncoding == L"UTF8")
114 {
115 bResult = WriteFileByUTF8(CurrentFilePath, MainTextBox->GetText());
116 }
117 else if (CurrentEncoding == L"UTF16LE")
118 {
119 bResult = WriteFileByUTF16LE(CurrentFilePath, MainTextBox->GetText());
120 }
121 else
122 {
123 bResult = WriteFileByAnsi(CurrentFilePath, MainTextBox->GetText());
124 }
125
126
127 /*
128 stream::FileStream* SaveFileStream = new stream::FileStream(CurrentFilePath, stream::FileStream::WriteOnly);
129 if (!SaveFileStream->IsAvailable())
130 {
131 GetCurrentController()->DialogService()->ShowMessageBox(this->GetNativeWindow(),
132 L"保存文件失败！",
133 L"GacTextBox",
134 INativeDialogService::DisplayOK,
135 INativeDialogService::DefaultFirst,
136 INativeDialogService::IconInformation,
137 INativeDialogService::ModalWindow);
138 return;
139 }
140
141 SaveFileStream->Write((void*)(MainTextBox->GetText().Buffer()),
142 MainTextBox->GetText().Length());
143 delete SaveFileStream;
144 */
145 this->SetText(CurrentFilePath + L" -GacTextBox");
146
147 }
148
149 void TextBoxEditorWindow::ExitMenu_OnClicked(GuiGraphicsComposition * sender, GuiEventArgs & arguments)
150 {
151 PostQuitMessage(0);
152 }
153
154 void TextBoxEditorWindow::UndoMenu_OnClicked(GuiGraphicsComposition * sender, GuiEventArgs & arguments)
155 {
156 MainTextBox->Undo();
157 }
158
159 void TextBoxEditorWindow::PasteMenu_OnClicked(GuiGraphicsComposition * sender, GuiEventArgs & arguments)
160 {
161 MainTextBox->Paste();
162 MainTextBox->SetFocus();
163 }
164
165 void TextBoxEditorWindow::CopyMenu_OnClicked(GuiGraphicsComposition * sender, GuiEventArgs & arguments)
166 {
167 MainTextBox->Copy();
168 MainTextBox->SetFocus();
169 }
170
171 void TextBoxEditorWindow::CutMenu_OnClicked(GuiGraphicsComposition * sender, GuiEventArgs & arguments)
172 {
173 MainTextBox->Cut();
174 MainTextBox->SetFocus();
175 }
176
177 void TextBoxEditorWindow::DeleteMenu_OnClicked(GuiGraphicsComposition * sender, GuiEventArgs & arguments)
178 {
179 MainTextBox->SetSelectionText(L"");
180 MainTextBox->SetFocus();
181 }
182
183 void TextBoxEditorWindow::SelectAllMenu_OnClicked(GuiGraphicsComposition * sender, GuiEventArgs & arguments)
184 {
185 MainTextBox->SelectAll();
186 MainTextBox->SetFocus();
187 }
188
189 void TextBoxEditorWindow::FindMenu_OnClicked(GuiGraphicsComposition * sender, GuiEventArgs & arguments)
190 {
191 FindTextWindow* findtextwindow = new FindTextWindow;
192 findtextwindow->GetNativeWindow()->SetParent(this->GetNativeWindow());
193 findtextwindow->MoveToScreenCenter();
194 findtextwindow->Show();
195
196 }
197
198 void TextBoxEditorWindow::DateMenu_OnClicked(GuiGraphicsComposition * sender, GuiEventArgs & arguments)
199 {
200 SYSTEMTIME systime;
201 GetLocalTime(&systime);
202 wchar_t *szTimeW = new wchar_t[20];
203 memset(szTimeW, NULL, 20 * sizeof(wchar_t));
204 swprintf_s(szTimeW, 20, L"%4d/%02d/%02d %02d:%02d", systime.wYear, systime.wMonth, systime.wDay, systime.wHour, systime.wMinute);
205
206 WString TimeStrW = szTimeW;
207 MainTextBox->SetSelectionText(TimeStrW);
208 delete[] szTimeW;
209 }
由于此程序没有写完，所以此代码也不是完整的，待我完成整个程序后再更新
时间： 2024-10-12 01:08:24