Mi scompaiono le bitmap OBM cliccandoci sopra

2 Risposte

• 

  skynet

  Utente Famoso

  Iscritto da

  lug, 2010

  Messaggi:

  3060

  Re: Mi scompaiono le bitmap OBM cliccandoci sopra

  04 lug 2011, 14:39

  Devi gestire il WM_PAINT.
• M

  matteo.1

  Pochi posts

  Iscritto da

  apr, 2011

  Messaggi:

  36

  Re: Mi scompaiono le bitmap OBM cliccandoci sopra

  05 lug 2011, 13:10

  Ho cercato di gestire WM_PAINT, utilizzando le funzioni UpdateWindow e WindowProc modificando il file .cpp, ma continuano a scomparirmi le bitmap cliccandoci sopra. Non capisco perchè facendo queste modifiche ancora non funzioni.
  
  Il file .cpp modificato è il seguente:

  #define STRICT
  #define WIN32_LEAN_AND_MEAN
  #define OEMRESOURSE
  #include <windows.h>
  #include "risorse1.h"
  
  LRESULT CALLBACK WindowProc(HWND hwnddlg, UINT umsg, WPARAM wParam, LPARAM lParam)
  {
     if(umsg==WM_PAINT)
      {
       HWND hwnd_button1= GetDlgItem(hwnddlg, IDC_BUTTON1);
       HBITMAP hwnd_bitmap1= LoadBitmap(0, MAKEINTRESOURCE(OBM_LFARROW));
       // OBM_LFARROW indica l'identificatore del bitmap freccia a sinistra
       SendMessage(hwnd_button1, BM_SETIMAGE, IMAGE_BITMAP, (LPARAM)hwnd_bitmap1);
  
       HWND hwnd_button2= GetDlgItem(hwnddlg, IDC_BUTTON2);
       HBITMAP hwnd_bitmap2= LoadBitmap(0, MAKEINTRESOURCE(OBM_RGARROW));
       // OBM_RGARROW indica l'identificatore del bitmap freccia a destra
       SendMessage(hwnd_button2, BM_SETIMAGE, IMAGE_BITMAP, (LPARAM)hwnd_bitmap2);
  
       HWND hwnd_button3= GetDlgItem(hwnddlg, IDC_BUTTON3);
       HBITMAP hwnd_bitmap3= LoadBitmap(0, MAKEINTRESOURCE (OBM_UPARROW));
       // OBM_UPARROW indica l'identificatore del bitmap freccia in alto
       SendMessage(hwnd_button3, BM_SETIMAGE, IMAGE_BITMAP, (LPARAM)hwnd_bitmap3);
  
       HWND hwnd_button4= GetDlgItem(hwnddlg, IDC_BUTTON4);
       HBITMAP hwnd_bitmap4= LoadBitmap(0, MAKEINTRESOURCE(OBM_DNARROW));
       // OBM_DNARROW indica l'identificatore del bitmap freccia in basso
       SendMessage(hwnd_button4, BM_SETIMAGE, IMAGE_BITMAP, (LPARAM)hwnd_bitmap4);
      }
      return FALSE;
  }
  
  BOOL CALLBACK spostamento_static_desiderato(HWND hwnd_static, int dx, int dy)
  {
    WINDOWPLACEMENT wp;
    ZeroMemory(&wp, sizeof(wp));
    wp.length= sizeof(wp);
    GetWindowPlacement(hwnd_static, &wp);
    wp.rcNormalPosition.left= wp.rcNormalPosition.left +dx;
    wp.rcNormalPosition.right= wp.rcNormalPosition.right +dx;
    wp.rcNormalPosition.top= wp.rcNormalPosition.top +dy;
    wp.rcNormalPosition.bottom= wp.rcNormalPosition.bottom +dy;
    return SetWindowPlacement(hwnd_static, &wp);
   }
  
  
  BOOL CALLBACK sposta_static(HWND hwnddlg, UINT umsg, WPARAM wparam, LPARAM lparam)
  {
    HWND hwnd_button1= GetDlgItem(hwnddlg, IDC_BUTTON1);
    HBITMAP hwnd_bitmap1= LoadBitmap(0, MAKEINTRESOURCE(OBM_LFARROW));
    // OBM_LFARROW indica l'identificatore del bitmap freccia a sinistra
    SendMessage(hwnd_button1, BM_SETIMAGE, IMAGE_BITMAP, (LPARAM)hwnd_bitmap1);
  
    HWND hwnd_button2= GetDlgItem(hwnddlg, IDC_BUTTON2);
    HBITMAP hwnd_bitmap2= LoadBitmap(0, MAKEINTRESOURCE(OBM_RGARROW));
    // OBM_RGARROW indica l'identificatore del bitmap freccia a destra
    SendMessage(hwnd_button2, BM_SETIMAGE, IMAGE_BITMAP, (LPARAM)hwnd_bitmap2);
  
    HWND hwnd_button3= GetDlgItem(hwnddlg, IDC_BUTTON3);
    HBITMAP hwnd_bitmap3= LoadBitmap(0, MAKEINTRESOURCE (OBM_UPARROW));
    // OBM_UPARROW indica l'identificatore del bitmap freccia in alto
    SendMessage(hwnd_button3, BM_SETIMAGE, IMAGE_BITMAP, (LPARAM)hwnd_bitmap3);
  
    HWND hwnd_button4= GetDlgItem(hwnddlg, IDC_BUTTON4);
    HBITMAP hwnd_bitmap4= LoadBitmap(0, MAKEINTRESOURCE(OBM_DNARROW));
    // OBM_DNARROW indica l'identificatore del bitmap freccia in basso
    SendMessage(hwnd_button4, BM_SETIMAGE, IMAGE_BITMAP, (LPARAM)hwnd_bitmap4);
  
     if(umsg==WM_CLOSE)
     {
       EndDialog(hwnddlg,0);
       return TRUE;
      }
  
       if(umsg==WM_COMMAND)
        {
          UpdateWindow(hwnddlg);
          WindowProc(hwnddlg, umsg, wparam, lparam);
          int spostamento=5;
          int id_button=LOWORD(wparam);
          HWND hwnd_static= GetDlgItem(hwnddlg, IDC_STATIC);
  
          if(id_button==IDC_BUTTON1)
            return spostamento_static_desiderato(hwnd_static, -spostamento, 0);
  
          if(id_button==IDC_BUTTON2)
            return spostamento_static_desiderato(hwnd_static, +spostamento, 0);
  
          if(id_button==IDC_BUTTON3)
            return spostamento_static_desiderato(hwnd_static, 0, -spostamento);
  
          if(id_button==IDC_BUTTON4)
            return spostamento_static_desiderato(hwnd_static, 0, +spostamento);
          }
        return FALSE;
      }
  
  int WinMain(HINSTANCE hinstance, HINSTANCE hprevinstance, LPSTR lpcmdline, int ncmdshow)
  {
    DialogBoxParam(0,"IDD_DIALOG8",0,sposta_static,0);
    return 0;
  }