ADD file via upload

MessageBox.h

@@ -0,0 +1,164 @@
+#include<graphics.h>
+#include <tchar.h>
+
+class EasyTextBox {
+private:
+	int left = 0, top = 0, right = 0, bottom = 0;
+	wchar_t* text = NULL;
+	size_t maxlen = 0;
+public:
+	void create(int x1, int y1, int x2, int y2, int max) {
+		maxlen = max;
+		text = new wchar_t[maxlen];
+		text[0] = 0;
+		left = x1, top = y1, right = x2, bottom = y2;
+		// 绘制用户界面
+		show();
+	}
+	~EasyTextBox() {
+		if (text != NULL) delete[] text;
+	}
+	wchar_t* get_text() {
+		return text;
+	}
+	bool check(int x, int y) {
+		return left <= x && x <= right && top <= y && y <= bottom;
+	}
+	void show() {
+		// 备份环境值
+		int old_line_color = getlinecolor();
+		int old_bk_color = getbkcolor();
+		int old_fill_color = getfillcolor();
+
+		setlinecolor(LIGHTGRAY);
+		setbkcolor(0xeeeeee);
+		setfillcolor(0xeeeeee);
+		fillrectangle(left, top, right, bottom);
+		outtextxy(left + 10, top + 5, (LPCTSTR)(&text[0]));
+
+		// 恢复环境值
+		setlinecolor(old_line_color);
+		setbkcolor(old_line_color);
+		setfillcolor(old_fill_color);
+	}
+	void on_message() {
+		// 备份环境值
+		int old_line_color = getlinecolor();
+		int old_bk_color = getbkcolor();
+		int old_fill_color = getfillcolor();
+
+		setlinecolor(BLACK);
+		setbkcolor(WHITE);
+		setfillcolor(WHITE);
+		fillrectangle(left, top, right, bottom);
+
+		int width = textwidth((LPCTSTR)text);
+		int counter = 0;
+		bool binput = true;
+
+		ExMessage msg;
+		while (binput) {
+			// 获取消息，但不从消息队列中拿出
+			while (binput && peekmessage(&msg, EX_MOUSE | EX_CHAR, false)) {
+				if (msg.message == WM_LBUTTONDOWN) {
+					// 如果鼠标点击文本框外面，结束文本输入
+					if (msg.x < left || msg.x > right || msg.y < top || msg.y > bottom) {
+						binput = false;
+						break;
+					}
+				}
+				else if (msg.message == WM_CHAR) {
+					size_t len = wcslen(text);
+					switch (msg.ch) {
+					case '\b': {
+						if (len > 0) {
+							text[len - 1] = 0;
+							width = textwidth((LPCTSTR)text);
+							counter = 0;
+							clearrectangle(left + 10 + width, top + 1, right - 1, bottom - 1);
+						} 
+						break;
+					}
+					case '\r':
+					case '\n':
+						binput = false;
+						break;
+					default:
+						if (len < maxlen - 1) {
+							text[len++] = msg.ch;
+							text[len] = 0;
+
+							clearrectangle(left + 10 + width + 1, top + 3, left + 10 + width + 1, bottom - 3);	// 清除画的光标
+							// 重新计算文本框宽度
+							width = textwidth((LPCTSTR)text);
+							counter = 0;
+							outtextxy(left + 10, top + 5, (LPCTSTR)text);
+						}
+					}
+				}
+				peekmessage(NULL, EX_MOUSE | EX_CHAR);
+			}
+
+			// 绘制光标（光标闪烁周期为 20ms * 32）
+			counter = (counter + 1) % 32;
+			if (counter < 16)
+				line(left + 10 + width + 1, top + 3, left + 10 + width + 1, bottom - 3);
+			else 
+				clearrectangle(left + 10 + width + 1, top + 3, left + 10 + width + 1, bottom - 3);		// 擦光标
+
+			// 延时 20ms
+			Sleep(20);
+		}
+		clearrectangle(left + 10 + width + 1, top + 3, left + 10 + width + 1, bottom - 3);	// 擦光标
+
+		// 恢复环境值
+		setlinecolor(old_line_color);
+		setbkcolor(old_bk_color);
+		setfillcolor(old_fill_color);
+
+		show();
+	}
+};
+
+// 实现按钮控件
+class EasyButton {
+private:
+	int left = 0, top = 0, right = 0, bottom = 0;
+	wchar_t* text = NULL; // 控件内容
+	void (*userfunc)() = NULL; // 控件消息
+
+public:
+	void create(int x1, int y1, int x2, int y2, const wchar_t* title, void(*func)()) {
+		text = new wchar_t[wcslen(title) + 1];
+		wcscpy_s(text, wcslen(title) + 1, title);
+		left = x1, top = y1, right = x2, bottom = y2;
+		userfunc = func;
+
+		// 绘制
+		show();
+	}
+	~EasyButton() {
+		if (text != NULL) delete[] text;
+	}
+	bool check(int x, int y) {
+		return left <= x && x <= right && top <= y && y <= bottom;
+	}
+	void show() {
+		int old_line_color = getlinecolor();
+		int old_bk_color = getbkcolor();
+		int old_fill_color = getfillcolor();
+
+		setlinecolor(BLACK); // 设置划线颜色
+		setbkcolor(WHITE); // 设置背景颜色
+		setfillcolor(WHITE); // 设置填充颜色
+		outtextxy(left + (right - left - textwidth((LPCTSTR)text) + 1) / 2, top + (bottom - top - textheight((LPCTSTR)text) + 1) / 2, (LPCTSTR)text);
+		
+		setlinecolor(old_line_color);
+		setbkcolor(old_bk_color);
+		setfillcolor(old_fill_color);
+	}
+
+	void on_message() {
+		if (userfunc != NULL) userfunc();
+	}
+};