菜鸟问题，关于用API画线函数MoveToEx?

[libin009]

现在画出来是一条从左上角到右下角的直线，我如何能让它只画从左上角到中点？
LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{

static int cxClient, cyClient;
HDC hdc;
PAINTSTRUCT ps;

switch (message)

{
case WM_SIZE:
cxClient = LOWORD (lParam);
cyClient = HIWORD (lParam);
return 0;

case WM_PAINT:
hdc = BeginPaint(hwnd,&ps);

MoveToEx(hdc, 0, 0, NULL);
LineTo(hdc, cxClient, cyClient);

EndPaint(hwnd, &ps);
return 0;

case WM_DESTROY:
PostQuitMessage(0);
return 0;

}

[wanyuzhen]

LineTo(hdc, cxClient/2, cyClient/2);

[zhengleting]

成功了没？我试了下，好像没成功

[libin009]

谢谢！