绘制横向条状显示整个磁盘，并显示分区大小；支持鼠标拖动控制分区容量大小，同时支持输入大小精准控制分区大小

这个功能可以通过使用Python的Tkinter库来实现。下面是一个简单的示例代码，可以绘制一个横向条状图，并且支持通过鼠标拖动和输入来控制分区大小：

import tkinter as tk

class DiskPartition:
    def __init__(self, size, color):
        self.size = size
        self.color = color

class DiskPartitionGUI:
    def __init__(self, master, partitions):
        self.master = master
        self.partitions = partitions
        self.width = 400
        self.height = 50
        self.canvas = tk.Canvas(master, width=self.width, height=self.height)
        self.canvas.pack()
        self.canvas.bind("<Button-1>", self.on_click)
        self.canvas.bind("<B1-Motion>", self.on_drag)
        self.canvas.bind("<ButtonRelease-1>", self.on_release)
        self.draw()

    def draw(self):
        total_size = sum(p.size for p in self.partitions)
        x0 = 0
        for p in self.partitions:
            x1 = x0 + self.width * p.size / total_size
            self.canvas.create_rectangle(x0, 0, x1, self.height, fill=p.color, width=0)
            x0 = x1
    
    def on_click(self, event):
        self.dragging = True
        self.x0 = event.x
    
    def on_drag(self, event):
        if self.dragging:
            x = max(0, min(self.width, event.x))
            dx = x - self.x0
            total_size = sum(p.size for p in self.partitions)
            p0 = self.partitions[0]
            p1 = self.partitions[-1]
            if dx > 0 and p1.size + dx > total_size:
                dx = total_size - p1.size
            elif dx < 0 and p0.size - dx < 0:
                dx = p0.size
            p0.size -= dx
            p1.size += dx
            self.x0 = x
            self.canvas.delete("all")
            self.draw()
    
    def on_release(self, event):
        self.dragging = False

def main():
    partitions = [
        DiskPartition(100, "red"),
        DiskPartition(200, "green"),
        DiskPartition(50, "blue")
    ]
    root = tk.Tk()
    gui = DiskPartitionGUI(root, partitions)
    root.mainloop()

if __name__ == "__main__":
    main()

这个代码会创建一个包含三个分区的磁盘条状图，并且可以通过鼠标拖动来调整分区大小。你可以根据自己的需要修改代码来添加更多的分区和自定义颜色。