win11 cb 20.03下安装easyx2021

写了一个鼠标放到选项上，左侧会出现黄色箭头，并且点击或按键盘对应序号能跳转相关页面的函数。
但是左侧箭头经常有概率瞎闪，点击和按键盘有时会失灵，没有进行页面跳转，请问一下是什么问题。

#include <stdio.h>
#include <easyx.h>
#include <graphics.h>
int main()
{
    int n=0,m=0;
    initgraph(1080,720,EX_SHOWCONSOLE);
    ExMessage msg;
    settextcolor(YELLOW);
    settextstyle(70,0,"宋体",0,0,0,true,false,false);
    outtextxy(540-textwidth("主 菜 单")/2,80,"主 菜 单");
    settextcolor(WHITE);
    settextstyle(50,0,"宋体",0,0,0,false,false,false);
    outtextxy(540-textwidth("1.柱状图")/2,200,"1.柱状图");
    outtextxy(540-textwidth("2.圆饼图")/2,320,"2.圆饼图");
    settextcolor(YELLOW);
    while(!m)
    {
        if(peekmessage(&msg,EX_MOUSE))
        {
            switch(msg.message)
            {
                case WM_MOUSEMOVE:
                    if(540-textwidth("1.柱状图")/2-textwidth("→")<=msg.x&&msg.x<=540+textwidth("1.柱状图")/2&&200<=msg.y&&msg.y<=200+textheight("柱状图"))
                       outtextxy(540-textwidth("1.柱状图")/2-textwidth("→"),200,"→");
                    if(540-textwidth("2.圆饼图")/2-textwidth("→")<=msg.x&&msg.x<=540+textwidth("2.圆饼图")/2&&320<=msg.y&&msg.y<=320+textheight("圆饼图"))
                       outtextxy(540-textwidth("2.圆饼图")/2-textwidth("→"),320,"→");
                    if(!(540-textwidth("1.柱状图")/2-textwidth("→")<=msg.x&&msg.x<=540+textwidth("1.柱状图")/2&&200<=msg.y&&msg.y<=200+textheight("柱状图")))
                       clearrectangle(540-textwidth("1.柱状图")/2-textwidth("→"),200,540-textwidth("1.柱状图")/2,200+textheight("→"));
                    if(!(540-textwidth("2.圆饼图")/2-textwidth("→")<=msg.x&&msg.x<=540+textwidth("2.圆饼图")/2&&320<=msg.y&&msg.y<=320+textheight("圆饼图")))
                        clearrectangle(540-textwidth("1.柱状图")/2-textwidth("→"),320,540-textwidth("1.柱状图")/2,320+textheight("→"));
                       break;
                case WM_LBUTTONDOWN:
                    if(540-textwidth("1.柱状图")/2<=msg.x&&msg.x<=540+textwidth("1.柱状图")/2&&200<=msg.y&&msg.y<=200+textheight("柱状图"))
                        m=1;
                    if(540-textwidth("2.圆饼图")/2<=msg.x&&msg.x<=540+textwidth("2.圆饼图")/2&&320<=msg.y&&msg.y<=320+textheight("圆饼图"))
                        m=2;
                    break;
                default:
                    break;
            }
        }
        if(peekmessage(&msg,EX_KEY))
            switch(msg.message)
            {
                case WM_KEYDOWN:
                    if(msg.vkcode==97||msg.vkcode==49)
                        m=1;
                    if(msg.vkcode==98||msg.vkcode==50)
                        m=2;
                    break;
                default:
                    break;
            }
    }
    return 0;
}