79752725

Date: 2025-09-01 16:11:49
Score: 1
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protected override void WndProc(ref Message m)
{
    const int WM_NCLBUTTONDOWN = 0xA1;
    const int HTCAPTION = 0x2;

    // Chặn kéo form bằng title bar
    if (m.Msg == WM_NCLBUTTONDOWN && (int)m.WParam == HTCAPTION)
    {
        return; // không xử lý message => không di chuyển
    }

    base.WndProc(ref m);
}

block form drag => form can not resize

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Posted by: Dyu