鼠标中键（滚轮）在窗口中不起作用，但单击是正常的，没有松动。这个问题是由窗口、硬件还是鼠标按钮引起的？

适用型号

EC1 (L), EC1-B DIVINA BLUE (L), EC1-B DIVINA PINK (L), EC1-C (L), EC2 (M), EC2 (M), EC2-B DIVINA BLUE (M), EC2-B DIVINA PINK (M), EC2-C (M), EC3-C (S), FK1+-B (XL), FK1+-B DIVINA BLUE (XL), FK1+-B DIVINA PINK (XL), FK1+-C (XL), FK1-B (L), FK1-B DIVINA BLUE (L), FK1-B DIVINA PINK (L), FK1-C (L), FK2-B (M), FK2-B DIVINA BLUE (M), FK2-B DIVINA PINK (M), FK2-C (M), S1 (M), S1 DIVINA BLUE (M), S1 DIVINA PINK (M), S1-C (M), S2 (S), S2 DIVINA BLUE (S), S2 DIVINA PINK (S), S2-C (S), ZA11-B (L), ZA11-C (L), ZA12-B (M), ZA12-C (M), ZA13-C (S), ZA13-C (S)

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