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我想使用BGI执行 DDA 画线算法。有时当我运行我的程序时它工作正常，有时它会因以下错误而中止：

[xcb] 处理队列时序列号未知 [xcb] 这很可能是一个多线程客户端，并且没有调用 XInitThreads [xcb] 正在中止，对此感到抱歉。a.out：../../src/xcb_io.c:274：poll_for_event：断言“！xcb_xlib_threads_sequence_lost”失败。中止（核心转储）

我尝试调用 XInitThreads 和之前为这个问题建议的一些其他解决方案。但它仍然在大多数时候崩溃。

这是我的代码：

#include <stdio.h>
#include <graphics.h>
#include <math.h>
#include <X11/Xlib.h>

void drawLine(int startX, int startY, int endX, int endY) {
    XInitThreads();
    //DDA Line Drawing Algorithm
    float deltaX, deltaY, step;
    int x = startX, y = endY;
    deltaX = (float)(endX - startX);
    deltaY = (float)(endY - startY);
    if(abs(deltaX) > abs(deltaY)) {
        step = deltaX;
    }
    else {
        step = deltaY;
    }
    putpixel(x, y,15);
    for(int i = 0; i < abs(step); i++) {
        x = (int)(x + deltaX/step + 0.5);
        y = (int)(y + deltaY/step + 0.5);
        putpixel(x, y,15);
        delay(100);
    }
}

int main() {
    XInitThreads();
    //Graphics Initialization.
    int gd = DETECT,gm;
    initgraph(&gd, &gm, NULL);
    //Actual Code.
    int startX, startY, endX, endY, in = 0;
    printf("Starting point:\nX = ");
    scanf("%d", &startX);
    printf("\nY = ");
    scanf("%d", &startY);
    printf("Ending point:\nX = ");
    scanf("%d", &endX);
    printf("\nY = ");
    scanf("%d", &endY);
    delay(1000);
    drawLine(startX, startY, endX, endY);
    //solution provided for same question asked previously.
    while(in == 0) {
        in = getchar();
    }
    closegraph();
    return 0;
}
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