An other problem ~_~; I need to move a window that doesn't have a title bar. So when I click down on the window, I keep in memory the pos (lParam of WM_LBUTTONDOWN), the prev_pos where I was at last click and the ancien_pos, an other variable I need.

Here is the code, it works so-so and the window is shaking a bit. Can anyone help? Email me at illuna@yahoo.com Thanks!

Illuna
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case WM_LBUTTONDOWN:
m_prev_mouse_pos.x = pos.x;
m_prev_mouse_pos.y = pos.y;
m_ancient_mouse_pos.x = pos.x;
m_ancient_mouse_pos.y = pos.y;

case WM_MOUSEMOVE:
if ((pos.x != m_ancient_mouse_pos.x) | | (pos.y != m_ancient_mouse_pos.y)){

RECT window_rect;
GetWindowRect(m_parent->gethwnd()),&window_rect);

delta_x = pos.x - m_prev_mouse_pos.x + window_rect.left;
delta_y = pos.y - m_prev_mouse_pos.y + window_rect.top;

memcpy(&m_ancient_mouse_pos, &m_prev_mouse_pos, sizeof(POINTS));
memcpy(&m_prev_mouse_pos, &pos, sizeof(POINTS));

MoveWindow(m_parent->gethwnd(), delta_x, delta_y, window_size.x, window_size.y, TRUE);
}

else
memcpy(&m_prev_mouse_pos, &m_ancient_mouse_pos, sizeof(POINTS));