rosapps/templates/imagesoft/custcombo.c

   1 #include <precomp.h>
   2
   3
   4 LRESULT WINAPI
   5 FlatComboProc(HWND hwnd,
   6               UINT msg,
   7               WPARAM wParam,
   8               LPARAM lParam)
   9 {
  10     HDC hdc;
  11     PAINTSTRUCT    ps;
  12     RECT rect, rect2;
  13     POINT pt;
  14
  15     WNDPROC OldComboProc = (WNDPROC)GetWindowLong(hwnd, GWL_USERDATA);
  16
  17     static BOOL fMouseDown  = FALSE;
  18     static BOOL fButtonDown = FALSE;
  19
  20     switch(msg)
  21     {
  22         case WM_PAINT:
  23         {
  24             if(wParam == 0) hdc = BeginPaint(hwnd, &ps);
  25             else hdc = (HDC)wParam;
  26
  27             /* mask off the borders and draw ComboBox normally */
  28             GetClientRect(hwnd, &rect);
  29
  30             InflateRect(&rect,
  31                         -GetSystemMetrics(SM_CXEDGE)*2,
  32                         -GetSystemMetrics(SM_CYEDGE)*2);
  33
  34             rect.right -= GetSystemMetrics(SM_CXVSCROLL);
  35
  36             IntersectClipRect(hdc,
  37                               rect.left,
  38                               rect.top,
  39                               rect.right,
  40                               rect.bottom);
  41
  42             /* Draw the ComboBox */
  43             CallWindowProc(OldComboProc,
  44                            hwnd,
  45                            msg,
  46                            (WPARAM)hdc,
  47                            lParam);
  48
  49             /* Now mask off inside and draw the borders */
  50             SelectClipRgn(hdc,
  51                           NULL);
  52             rect.right += GetSystemMetrics(SM_CXVSCROLL);
  53
  54             ExcludeClipRect(hdc,
  55                             rect.left,
  56                             rect.top,
  57                             rect.right,
  58                             rect.bottom);
  59
  60             /* draw borders */
  61             GetClientRect(hwnd,
  62                           &rect2);
  63             FillRect(hdc,
  64                      &rect2,
  65                      //CreateSolidBrush(RGB(0,0,0)));
  66                      GetSysColorBrush(COLOR_3DFACE));
  67
  68             /* now draw the button */
  69             SelectClipRgn(hdc,
  70                           NULL);
  71             rect.left = rect.right - GetSystemMetrics(SM_CXVSCROLL);
  72
  73             if(fButtonDown)
  74             {
  75                 HBRUSH oldBrush;
  76                 HPEN oldPen;
  77                 POINT pt[3];
  78
  79                 FillRect(hdc, &rect, CreateSolidBrush(RGB(182,189,210)));
  80                 rect.top -= 1;
  81                 rect.bottom += 1;
  82                 FrameRect(hdc, &rect, GetStockBrush(WHITE_BRUSH));
  83
  84                 pt[0].x = rect.right - ((GetSystemMetrics(SM_CXVSCROLL) / 2) + 2);
  85                 pt[0].y = rect.bottom / 2;
  86                 pt[1].x = pt[0].x + 4;
  87                 pt[1].y = pt[0].y;
  88                 pt[2].x = pt[1].x - 2;
  89                 pt[2].y = pt[1].y + 2;
  90
  91                 oldPen = (HPEN) SelectObject(hdc, GetStockPen(WHITE_PEN));
  92                 oldBrush = (HBRUSH) SelectObject(hdc, GetStockBrush(WHITE_BRUSH));
  93                 Polygon(hdc, pt, 3);
  94
  95                 SelectObject(hdc, oldPen);
  96                 SelectObject(hdc, oldBrush);
  97             }
  98             else
  99             {
 100                 HBRUSH oldBrush;
 101                 POINT pt[3];
 102
 103                 FillRect(hdc, &rect, GetSysColorBrush(COLOR_3DFACE));
 104                 rect.top -= 1;
 105                 rect.bottom += 1;
 106                 FrameRect(hdc, &rect, GetStockBrush(WHITE_BRUSH));
 107
 108                 pt[0].x = rect.right - ((GetSystemMetrics(SM_CXVSCROLL) / 2) + 2);
 109                 pt[0].y = rect.bottom / 2;
 110                 pt[1].x = pt[0].x + 4;
 111                 pt[1].y = pt[0].y;
 112                 pt[2].x = pt[1].x - 2;
 113                 pt[2].y = pt[1].y + 2;
 114
 115                 oldBrush = (HBRUSH) SelectObject(hdc, GetStockBrush(BLACK_BRUSH));
 116                 Polygon(hdc, pt, 3);
 117
 118                 SelectObject(hdc, oldBrush);
 119             }
 120
 121
 122             if(wParam == 0)
 123                 EndPaint(hwnd, &ps);
 124
 125             return 0;
 126         }
 127
 128         /* check if mouse is within drop-arrow area, toggle
 129          * a flag to say if the mouse is up/down. Then invalidate
 130          * the window so it redraws to show the changes. */
 131         case WM_LBUTTONDBLCLK:
 132         case WM_LBUTTONDOWN:
 133         {
 134
 135             pt.x = (short)LOWORD(lParam);
 136             pt.y = (short)HIWORD(lParam);
 137
 138             GetClientRect(hwnd, &rect);
 139
 140             InflateRect(&rect,
 141                         -GetSystemMetrics(SM_CXEDGE),
 142                         -GetSystemMetrics(SM_CYEDGE));
 143             rect.left = rect.right - GetSystemMetrics(SM_CXVSCROLL);
 144
 145             if(PtInRect(&rect, pt))
 146             {
 147                 /* we *should* call SetCapture, but the ComboBox does it for us */
 148                 fMouseDown = TRUE;
 149                 fButtonDown = TRUE;
 150                 InvalidateRect(hwnd, 0, 0);
 151             }
 152         }
 153         break;
 154
 155         /* mouse has moved. Check to see if it is in/out of the drop-arrow */
 156         case WM_MOUSEMOVE:
 157         {
 158
 159             pt.x = (short)LOWORD(lParam);
 160             pt.y = (short)HIWORD(lParam);
 161
 162             if(fMouseDown && (wParam & MK_LBUTTON))
 163             {
 164                 GetClientRect(hwnd, &rect);
 165
 166                 InflateRect(&rect, -GetSystemMetrics(SM_CXEDGE), -GetSystemMetrics(SM_CYEDGE));
 167                 rect.left = rect.right - GetSystemMetrics(SM_CXVSCROLL);
 168
 169                 if(fButtonDown != PtInRect(&rect, pt))
 170                 {
 171                     fButtonDown = PtInRect(&rect, pt);
 172                     InvalidateRect(hwnd, 0, 0);
 173                 }
 174             }
 175         }
 176         break;
 177
 178         case WM_LBUTTONUP:
 179         {
 180
 181             if(fMouseDown)
 182             {
 183                 /* No need to call ReleaseCapture, the ComboBox does it for us */
 184                 fMouseDown = FALSE;
 185                 fButtonDown = FALSE;
 186                 InvalidateRect(hwnd, 0, 0);
 187             }
 188         }
 189         break;
 190     }
 191
 192     return CallWindowProc(OldComboProc,
 193                           hwnd,
 194                           msg,
 195                           wParam,
 196                           lParam);
 197 }
 198
 199 VOID MakeFlatCombo(HWND hwndCombo)
 200 {
 201     LONG OldComboProc;
 202
 203     /* Remember old window procedure */
 204     OldComboProc = GetWindowLongPtr(hwndCombo, GWL_WNDPROC);
 205     SetWindowLongPtr(hwndCombo,
 206                      GWL_USERDATA,
 207                      OldComboProc);
 208
 209     /* Perform the subclass */
 210     SetWindowLongPtr(hwndCombo,
 211                      GWL_WNDPROC,
 212                      (LONG_PTR)FlatComboProc);
 213 }