【摘录】《KDE2/Qt编程金典》第四章：显示弹出式对话框——4.8 由KDialogBase派生而来的KMessageBox对话框 [复制链接]

1 /* main.cpp */
2 #include <kapp.h>
3 #include <kcmdlineargs.h>
4 #include “mboxes.h”
5
6 int main(int argc,char **argv)
7 {
8 KCmdLineArgs::init(argc,argv,”mboxes”,
9 “Message Boxes”,”0.0”);
10 KApplication app;
11 Mboxes mboxes;
12 mboxes.show();
13 app.setMainWidget(&mboxes);
14 return(app.exec());
15 }

1 /* mboxes.h */
2 #ifndef MBOXES_H
3 #define MBOXES_H
4
5 #include <qwidget.h>
6 #include <qlabel.h>
7
8 class Mboxes: public QWidget
9 {
10 Q_OBJECT
11 public:
12 Mboxes(QWidget *parent=0,const char *name=0);
13 private:
14 QLabel *label;
15 private slots:
16 void button1();
17 void button2();
18 void button3();
19 void button4();
20 void button5();
21 void button6();
22 void button7();
23 void button8();
24 void button9();
25 };
26
27 #endif

1 /* mboxes.cpp */
2 #include “mboxes.h”
3 #include <qpushbutton.h>
4 #include <kmessagebox.h>
5 #include <qlayout.h>
6
7 Mboxes::Mboxes(QWidget *parent,const char *name)
8 : QWidget(parent,name)
9 {
10 QPushButton *button;
11 QVBoxLayout *layout = new QVBoxLayout(this,3);
12
13 button = new QPushButton(“Question Yes No”,this);
14 layout->addWidget(button);
15 connect(button,SIGNAL(clicked()),this,SLOT(button1()));
16
17 button = new QPushButton(“Question Yes No List”,this);
18 layout->addWidget(button);
19 connect(button,SIGNAL(clicked()),this,SLOT(button2()));
20
21 button = new QPushButton(“Warning Yes No”,this);
22 layout->addWidget(button);
23 connect(button,SIGNAL(clicked()),this,SLOT(button3()));
24
25 button =
26 new QPushButton(“Warning Continue Cancel”,this);
27 layout->addWidget(button);
28 connect(button,SIGNAL(clicked()),this,SLOT(button4()));
29
30 button = new QPushButton(“Warning Yes No Cancel”,this);
31 layout->addWidget(button);
32 connect(button,SIGNAL(clicked()),this,SLOT(button5()));
33
34 button = new QPushButton(“Error”,this);
35 layout->addWidget(button);
36 connect(button,SIGNAL(clicked()),this,SLOT(button6()));
37
38 button = new QPushButton(“Sorry”,this);
39 layout->addWidget(button);
40 connect(button,SIGNAL(clicked()),this,SLOT(button7()));
41
42 button = new QPushButton(“Information”,this);
43 layout->addWidget(button);
44 connect(button,SIGNAL(clicked()),this,SLOT(button8()));
45
46 button = new QPushButton(“About”,this);
47 layout->addWidget(button);
48 connect(button,SIGNAL(clicked()),this,SLOT(button9()));
49
50 label = new QLabel(“-”,this);
51 layout->addWidget(label);
52 resize(10,10);
53 }
54 void Mboxes::button1()
55 {
56 int result = KMessageBox::questionYesNo(this,
57 “Are you sure you want to delete\nall “
58 “the files in this directory?”,
59 “questionYesNo”);
60 switch(result) {
61 case KMessageBox::Yes:
62 label->setText(QString(“Yes”));
63 break;
64 case KMessageBox::No:
65 label->setText(QString(“No”));
66 break;
67 }
68 }
69 void Mboxes::button2()
70 {
71 QStringList list;
72 list.append(“fork”);
73 list.append(“spoon”);
74 list.append(“knife”);
75 int result = KMessageBox::questionYesNoList(this,
76 “Are you sure you want to delete\nall “
77 “the items shown in the list?”,
78 list,
79 “questionYesNoList”);
80 switch(result) {
81 case KMessageBox::Yes:
82 label->setText(QString(“Yes”));
83 break;
84 case KMessageBox::No:
85 label->setText(QString(“No”));
86 break;
87 }
88 }
89 void Mboxes::button3()
90 {
91 int result = KMessageBox::warningYesNo(this,
92 “Reset all status codes?”,
93 “warningYesNo”);
94 switch(result) {
95 case KMessageBox::Yes:
96 label->setText(QString(“Yes”));
97 break;
98 case KMessageBox::No:
99 label->setText(QString(“No”));
100 break;
101 }
102 }
103 void Mboxes::button4()
104 {
105 int result = KMessageBox::warningContinueCancel(this,
106 “Overwrite the existing file?”,
107 “warningContinueCancel”,
108 QString(“Overwrite”));
109 switch(result) {
110 case KMessageBox::Continue:
111 label->setText(QString(“Continue”));
112 break;
113 case KMessageBox::Cancel:
114 label->setText(QString(“Cancel”));
115 break;
116 }
117 }
118 void Mboxes::button5()
119 {
120 int result = KMessageBox::warningYesNoCancel(this,
121 “Quitting without saving the file could result\n”
122 “in loss of data. Save before quitting?”,
123 “warningYesNoCancel”);
124 switch(result) {
125 case KMessageBox::Yes:
126 label->setText(QString(“Yes”));
127 break;
128 case KMessageBox::No:
129 label->setText(QString(“No”));
130 break;
131 case KMessageBox::Cancel:
132 label->setText(QString(“Cancel”));
133 break;
134 }
135 }
136 void Mboxes::button6()
137 {
138 KMessageBox::error(this,
139 “Unable to save configuration data.”);
140 }
141 void Mboxes::button7()
142 {
143 KMessageBox::sorry(this,
144 “The file you specified contains no data.”);
145 }
146 void Mboxes::button8()
147 {
148 KMessageBox::information(this,
149 “Pressing Esc will clear the window.”);
150 }
151 void Mboxes::button9()
152 {
153 KMessageBox::about(this,
154 “This is a simple about-box that can\n”
155 “contain several lines of text”);
156 }