  In this paper, we study the complex Wigner matrices
$M_n=\frac{1}{\sqrt{n}}W_n$ whose eigenvalues are typically in the interval
$[-2,2]$. Let $\lambda_1\leq \lambda_2...\leq\lambda_n$ be the ordered
eigenvalues of $M_n$. Under the assumption of four matching moments with the
Gaussian Unitary Ensemble(GUE), for test function $f$ 4-times continuously
differentiable on an open interval including $[-2,2]$, we establish central
limit theorems for two types of partial linear statistics of the eigenvalues.
The first type is defined with a threshold $u$ in the bulk of the Wigner
semicircle law as $\mathcal{A}_n[f;
u]=\sum_{l=1}^nf(\lambda_l)\mathbf{1}_{\{\lambda_l\leq u\}}$. And the second
one is $\mathcal{B}_n[f; k]=\sum_{l=1}^{k}f(\lambda_l)$ with positive integer
$k=k_n$ such that $k/n\rightarrow y\in (0,1)$ as $n$ tends to infinity.
Moreover, we derive a weak convergence result for a partial sum process
constructed from $\mathcal{B}_n[f; \lfloor nt\rfloor]$.
