MessageBox
1.简介
早年学习win32 GUI编程 通过调用一个API 叫MessageBox
使得程序能快速弹出一个小窗口 当看到这个小窗口出现在屏幕上时
开心得不得了 觉得非常不可思议
它生动形象 跟原来在控制台上运行的 只能给出黑底白色结果的dos程序完全不同
从此 我从黑色单调的世界进入了称之为“图形界面“的色彩斑斓的绝妙空间
2.代码
一个小巧可爱的MessageBox跃然于桌面上
下面我们看看它的实现代码
void make_window8(struct SHTCTL *shtctl, struct SHEET *sht, char *title) { static char closebtn[14][16] = { "OOOOOOOOOOOOOOO@", "OQQQQQQQQQQQQQ$@", "OQQQQQQQQQQQQQ$@", "OQQQ@@QQQQ@@QQ$@", "OQQQQ@@QQ@@QQQ$@", "OQQQQQ@@@@QQQQ$@", "OQQQQQQ@@QQQQQ$@", "OQQQQQ@@@@QQQQ$@", "OQQQQ@@QQ@@QQQ$@", "OQQQ@@QQQQ@@QQ$@", "OQQQQQQQQQQQQQ$@", "OQQQQQQQQQQQQQ$@", "O$$$$$$$$$$$$$$@", "@@@@@@@@@@@@@@@@" }; int x, y; char c; int bxsize = sht->bxsize; int bysize = sht->bysize; boxfill8(sht->buf, bxsize, COL8_C6C6C6, 0, 0, bxsize - 1, 0); boxfill8(sht->buf, bxsize, COL8_FFFFFF, 1, 1, bxsize - 2, 1); boxfill8(sht->buf, bxsize, COL8_C6C6C6, 0, 0, 0, bysize - 1); boxfill8(sht->buf, bxsize, COL8_FFFFFF, 1, 1, 1, bysize - 1); boxfill8(sht->buf, bxsize, COL8_848484, bxsize - 2, 1, bxsize - 2, bysize - 2); boxfill8(sht->buf, bxsize, COL8_000000, bxsize - 1, 0, bxsize - 1, bysize - 1); boxfill8(sht->buf, bxsize, COL8_C6C6C6, 2, 2, bxsize - 3, bysize - 3); boxfill8(sht->buf, bxsize, COL8_000084, 3, 3, bxsize - 4, 20); boxfill8(sht->buf, bxsize, COL8_848484, 1, bysize - 2, bxsize - 2, bysize - 2); boxfill8(sht->buf, bxsize, COL8_000000, 0, bysize - 1, bxsize - 1, bysize - 1); showString(shtctl, sht, 24, 4, COL8_FFFFFF, title); for (y = 0; y < 14; y++) { for (x = 0; x < 16; x++) { c = closebtn[y][x]; if (c == '@') { c = COL8_000000; } else if (c == '$') { c = COL8_848484; } else if (c == 'Q') { c = COL8_C6C6C6; } else { c = COL8_FFFFFF; } sht->buf[(5+y) * sht->bxsize + (sht->bxsize - 21 + x)] = c; } } return; }
make_window8 函数是专门用来绘制这个小窗口的
closebtn这个数组 对应的是小窗口右上角的X按钮
这个数组中 @元素所对应的就是图像中关闭按钮的小叉叉
该调用函数中 参数sht对应的就是该小窗口的图层
代码中 boxfill8这几个函数的调用 作用是绘制窗口的主窗体
showString调用用来显示小窗口上方的小标题
下面的两个for循环这是用来绘制小窗台右上角的关闭按钮
void message_box(struct SHTCTL *shtctl, char *title) { struct SHEET *sht_win; unsigned char *buf_win; sht_win = sheet_alloc(shtctl); buf_win = (unsigned char *)memman_alloc_4k(memman, 160 * 68); sheet_setbuf(sht_win, buf_win, 160, 68, -1); make_window8(shtctl, sht_win, title); showString(shtctl, sht_win, 24, 28, COL8_000000, "Welcome to"); showString(shtctl, sht_win, 24, 44, COL8_000000, "MyOS"); sheet_slide(shtctl, sht_win, 80, 72); sheet_updown(shtctl, sht_win, 1); }
主入口函数的变化
void CMain(void) { .... message_box(shtctl, "windown"); sheet_updown(shtctl, sht_back, 0); sheet_updown(shtctl, sht_mouse, 100); io_sti(); .... }
3.编译运行
Make 回车
java 打包
img运行
