C# Namespace Win32 Constantes WM_PAINT WM_HSCROLL WM_VSCROLL DLL user32.dll

[dmassive]

Si, probe varios y no funciona, pero encontre una clase que importa el user32.dll e implementa esas constantes Win32.

Si a alguien le interesa dejo el codigo de la clase completa con los datos de su autor:

Código C#:

using System;
using System.Runtime.InteropServices;
using System.Drawing;
 
 
/// <summary>
/// Win32 support code.
/// (C) 2003 Bob Bradley / [email protected]
/// </summary>
public class win32
{
     
    public const int  WM_MOUSEMOVE      =              0x0200;
    public const int  WM_LBUTTONDOWN     =             0x0201;
    public const int  WM_LBUTTONUP       =             0x0202;
    public const int  WM_RBUTTONDOWN     =             0x0204;
    public const int  WM_LBUTTONDBLCLK   =             0x0203;
 
    public const int  WM_MOUSELEAVE      =             0x02A3;
 
 
    
    public const int WM_PAINT     =                   0x000F;
    public const int WM_ERASEBKGND   =                0x0014;
    
    public const int WM_PRINT         =               0x0317;
 
    //const int EN_HSCROLL       =   0x0601;
    //const int EN_VSCROLL       =   0x0602;
 
    public const int WM_HSCROLL       =              0x0114;
    public const int WM_VSCROLL       =              0x0115;
 
 
    public const int EM_GETSEL              = 0x00B0;
    public const int EM_LINEINDEX           = 0x00BB;
    public const int EM_LINEFROMCHAR        = 0x00C9;
 
    public const int EM_POSFROMCHAR         = 0x00D6;
 
 
 
    [DllImport("USER32.DLL", EntryPoint= "PostMessage")]
    public static extern bool PostMessage(IntPtr hwnd, uint msg,
        IntPtr wParam, IntPtr lParam);
 
    /*
        BOOL PostMessage(          HWND hWnd,
            UINT Msg,
            WPARAM wParam,
            LPARAM lParam
            );
    */
 
    // Put this declaration in your class   //IntPtr
    [DllImport("USER32.DLL", EntryPoint= "SendMessage")]
    public static extern int SendMessage(IntPtr hwnd, int msg, IntPtr wParam,
        IntPtr lParam);
 
 
 
    
    [DllImport("USER32.DLL", EntryPoint= "GetCaretBlinkTime")]
    public static extern uint GetCaretBlinkTime();
 
 
 
 
    const int WM_PRINTCLIENT    = 0x0318;
 
    const long PRF_CHECKVISIBLE=0x00000001L;
    const long PRF_NONCLIENT    = 0x00000002L;
    const long PRF_CLIENT       = 0x00000004L;
    const long PRF_ERASEBKGND   = 0x00000008L;
    const long PRF_CHILDREN = 0x00000010L;
    const long PRF_OWNED        = 0x00000020L;
 
    /*  Will clean this up later doing something like this
    enum  CaptureOptions : long
    {
        PRF_CHECKVISIBLE= 0x00000001L,
        PRF_NONCLIENT   = 0x00000002L,
        PRF_CLIENT      = 0x00000004L,
        PRF_ERASEBKGND  = 0x00000008L,
        PRF_CHILDREN    = 0x00000010L,
        PRF_OWNED       = 0x00000020L
    }
    */
 
 
    public static bool CaptureWindow(System.Windows.Forms.Control control, 
                            ref System.Drawing.Bitmap bitmap)
    {
        //This function captures the contents of a window or control
 
        Graphics g2 = Graphics.FromImage(bitmap);
 
        //PRF_CHILDREN // PRF_NONCLIENT
        int meint = (int)(PRF_CLIENT | PRF_ERASEBKGND); //| PRF_OWNED ); //  );
        System.IntPtr meptr = new System.IntPtr(meint);
 
        System.IntPtr hdc = g2.GetHdc();
        win32.SendMessage(control.Handle,win32.WM_PRINT,hdc,meptr);
 
        g2.ReleaseHdc(hdc);
        g2.Dispose();
 
        return true;
        
    }
}