fltk-demo/main.cpp

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#include <FL/Fl.H>
#include <FL/Fl_Box.H>
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#include <FL/Fl_Button.H>
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#include <FL/Fl_Pack.H>
#include <FL/Fl_Window.H>
int demo1(int argc, char** argv)
{
// 创建主窗口
Fl_Window* window = new Fl_Window(800, 600, "FLTK 上下布局示例");
window->color(FL_WHITE);
// 创建一个垂直排列的 Fl_Pack 容器
Fl_Pack* vpack = new Fl_Pack(0, 0, 800, 600);
vpack->type(Fl_Pack::VERTICAL); // 设置为垂直布局
vpack->spacing(10); // 设置子部件之间的间距
// 上部分内容
Fl_Box* top_box = new Fl_Box(0, 0, 800, 300, "上部分");
top_box->box(FL_UP_BOX);
top_box->color(FL_BLUE);
top_box->labelsize(24);
top_box->labelcolor(FL_WHITE);
// 下部分内容
Fl_Box* bottom_box = new Fl_Box(0, 0, 800, 300, "下部分");
bottom_box->box(FL_UP_BOX);
bottom_box->color(FL_GREEN);
bottom_box->labelsize(24);
bottom_box->labelcolor(FL_WHITE);
// 结束 Fl_Pack 容器
vpack->end();
// 设置窗口的布局容器
window->end();
window->resizable(vpack); // 使布局随窗口缩放
window->show(argc, argv);
// 运行事件循环
return Fl::run();
}
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int demo2()
{
auto* dialog = new Fl_Window(300, 100);
auto* icon = new Fl_Box(0, 0, 50, 50, "!");
auto* text = new Fl_Box(50, 0, 250, 40, "Out of Memory Error");
auto* btns = new Fl_Group(50, 50, 250, 50); // parent group
auto* darn = new Fl_Button(200, 50, 100, 50, "Darn!");
auto* R = new Fl_Box(50, 50, 150, 50); // "invisible" box "R"
R->hide(); // make sure it's invisible
btns->resizable(R); // make "R" parent group resizable
btns->end();
dialog->resizable(darn);
dialog->end();
dialog->show();
// 运行事件循环
return Fl::run();
}
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int main(int argc, char** argv)
{
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// demo1(argc, argv);
demo2();
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}