| 7fd59977 |
1 | // include windows.h first to have all definitions available |
| 2 | #include <windows.h> |
| 3 | |
| 4 | #include <WNT_Window.hxx> |
| 5 | |
| 6 | //***// |
| 7 | //*** This window procedure provides management of the window background. ***// |
| 8 | //*** Background belongs to the window class but we need that windows which ***// |
| 9 | //*** are based on the same class have different backgrounds. So, we are ***// |
| 10 | //*** using window subclassing technique to provide this ability. ***// |
| 11 | //***// |
| 12 | LRESULT CALLBACK WNT_WndProc ( |
| 13 | HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam |
| 14 | ) { |
| 15 | |
| 16 | HDC hDC; |
| 17 | HPALETTE hOldPal; |
| 18 | WNDPROC lpfnWndProc; |
| 19 | WINDOW_DATA* wd; |
| 20 | WNT_Window* win; |
| 21 | RECT invRect; |
| 22 | |
| 23 | wd = (WINDOW_DATA* )GetWindowLongPtr (hwnd, GWLP_USERDATA); |
| 24 | win = (WNT_Window* )wd->WNT_Window_Ptr; |
| 25 | lpfnWndProc = (WNDPROC )win->WndProc(); |
| 26 | |
| 27 | if ( msg == WM_ERASEBKGND && !( wd -> dwFlags & WDF_NOERASEBKGRND ) ) { |
| 28 | |
| 29 | hDC = ( HDC )wParam; |
| 30 | |
| 31 | if ( wd -> hPal ) { |
| 32 | |
| 33 | hOldPal = SelectPalette ( hDC, wd -> hPal, FALSE ); |
| 34 | |
| 35 | if ( RealizePalette ( hDC ) ) |
| 36 | |
| 37 | UpdateColors ( hDC ); |
| 38 | |
| 39 | } // end if |
| 40 | |
| 41 | GetClipBox ( hDC, &invRect ); |
| 42 | FillRect ( hDC, &invRect, ( HBRUSH )( win -> HBackground () ) ); |
| 43 | |
| 44 | if ( wd -> hPal ) |
| 45 | |
| 46 | SelectPalette ( hDC, hOldPal, FALSE ); |
| 47 | |
| 48 | return TRUE; |
| 49 | |
| 50 | } else if ( msg == WM_MOVE ) { |
| 51 | |
| 52 | WINDOWPLACEMENT wp; |
| 53 | |
| 54 | wp.length = sizeof ( WINDOWPLACEMENT ); |
| 55 | GetWindowPlacement ( hwnd, &wp ); |
| 56 | |
| 57 | win -> SetPos ( |
| 58 | wp.rcNormalPosition.left, wp.rcNormalPosition.top, |
| 59 | wp.rcNormalPosition.right, wp.rcNormalPosition.bottom |
| 60 | ); |
| 61 | |
| 62 | } // end else |
| 63 | |
| 64 | return CallWindowProc ( lpfnWndProc, hwnd, msg, wParam, lParam ); |
| 65 | |
| 66 | } // end WNT_WndProc |
| 67 | //***// |
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