55 lines
1.5 KiB
C++
55 lines
1.5 KiB
C++
// =====================================================================
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// 第 3 课：随机抽卡 —— 老师完整答案
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// =====================================================================
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#include <FL/Fl.H>
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#include <FL/Fl_Window.H>
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#include <FL/Fl_Button.H>
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#include <FL/Fl_Box.H>
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#include <cstdio> // sprintf
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#include <cstdlib> // rand, srand
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#include <ctime> // time
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Fl_Box *result_box;
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Fl_Box *info_box;
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void draw_callback(Fl_Widget *w, void *data) {
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int r = std::rand() % 100;
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char info[50];
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std::sprintf(info, "本次点数：%d", r);
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info_box->label(info);
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if (r < 70) {
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result_box->label("☆ 普通卡 ☆");
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result_box->labelcolor(fl_rgb_color(128, 128, 128));
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} else if (r < 95) {
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result_box->label("★ 稀有卡 ★");
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result_box->labelcolor(FL_BLUE);
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} else {
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result_box->label("★★★ 超稀有卡！！ ★★★");
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result_box->labelcolor(FL_RED);
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}
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}
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int main() {
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std::srand(std::time(nullptr));
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Fl_Window *window = new Fl_Window(400, 350, "抽卡世界 - 第3课");
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Fl_Button *btn = new Fl_Button(130, 30, 140, 50, "抽一张！");
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btn->labelsize(18);
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btn->callback(draw_callback);
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result_box = new Fl_Box(50, 110, 300, 80, "点击按钮抽卡吧！");
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result_box->labelsize(28);
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result_box->labelfont(FL_BOLD);
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info_box = new Fl_Box(50, 200, 300, 50, "");
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info_box->labelsize(14);
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window->end();
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window->show();
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return Fl::run();
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}
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