reactos/rosapps/templates/imagesoft/custcombo.c

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#include <precomp.h>
LRESULT WINAPI
FlatComboProc(HWND hwnd,
UINT msg,
WPARAM wParam,
LPARAM lParam)
{
HDC hdc;
PAINTSTRUCT ps;
RECT rect, rect2;
POINT pt;
WNDPROC OldComboProc = (WNDPROC)GetWindowLong(hwnd, GWL_USERDATA);
static BOOL fMouseDown = FALSE;
static BOOL fButtonDown = FALSE;
switch(msg)
{
case WM_PAINT:
{
if(wParam == 0) hdc = BeginPaint(hwnd, &ps);
else hdc = (HDC)wParam;
/* mask off the borders and draw ComboBox normally */
GetClientRect(hwnd, &rect);
InflateRect(&rect,
-GetSystemMetrics(SM_CXEDGE)*2,
-GetSystemMetrics(SM_CYEDGE)*2);
rect.right -= GetSystemMetrics(SM_CXVSCROLL);
IntersectClipRect(hdc,
rect.left,
rect.top,
rect.right,
rect.bottom);
/* Draw the ComboBox */
CallWindowProc(OldComboProc,
hwnd,
msg,
(WPARAM)hdc,
lParam);
/* Now mask off inside and draw the borders */
SelectClipRgn(hdc,
NULL);
rect.right += GetSystemMetrics(SM_CXVSCROLL);
ExcludeClipRect(hdc,
rect.left,
rect.top,
rect.right,
rect.bottom);
/* draw borders */
GetClientRect(hwnd,
&rect2);
FillRect(hdc,
&rect2,
//CreateSolidBrush(RGB(0,0,0)));
GetSysColorBrush(COLOR_3DFACE));
/* now draw the button */
SelectClipRgn(hdc,
NULL);
rect.left = rect.right - GetSystemMetrics(SM_CXVSCROLL);
if(fButtonDown)
{
HBRUSH oldBrush;
HPEN oldPen;
POINT pt[3];
FillRect(hdc, &rect, CreateSolidBrush(RGB(182,189,210)));
rect.top -= 1;
rect.bottom += 1;
FrameRect(hdc, &rect, GetStockBrush(WHITE_BRUSH));
pt[0].x = rect.right - ((GetSystemMetrics(SM_CXVSCROLL) / 2) + 2);
pt[0].y = rect.bottom / 2;
pt[1].x = pt[0].x + 4;
pt[1].y = pt[0].y;
pt[2].x = pt[1].x - 2;
pt[2].y = pt[1].y + 2;
oldPen = (HPEN) SelectObject(hdc, GetStockPen(WHITE_PEN));
oldBrush = (HBRUSH) SelectObject(hdc, GetStockBrush(WHITE_BRUSH));
Polygon(hdc, pt, 3);
SelectObject(hdc, oldPen);
SelectObject(hdc, oldBrush);
}
else
{
HBRUSH oldBrush;
POINT pt[3];
FillRect(hdc, &rect, GetSysColorBrush(COLOR_3DFACE));
rect.top -= 1;
rect.bottom += 1;
FrameRect(hdc, &rect, GetStockBrush(WHITE_BRUSH));
pt[0].x = rect.right - ((GetSystemMetrics(SM_CXVSCROLL) / 2) + 2);
pt[0].y = rect.bottom / 2;
pt[1].x = pt[0].x + 4;
pt[1].y = pt[0].y;
pt[2].x = pt[1].x - 2;
pt[2].y = pt[1].y + 2;
oldBrush = (HBRUSH) SelectObject(hdc, GetStockBrush(BLACK_BRUSH));
Polygon(hdc, pt, 3);
SelectObject(hdc, oldBrush);
}
if(wParam == 0)
EndPaint(hwnd, &ps);
return 0;
}
/* check if mouse is within drop-arrow area, toggle
* a flag to say if the mouse is up/down. Then invalidate
* the window so it redraws to show the changes. */
case WM_LBUTTONDBLCLK:
case WM_LBUTTONDOWN:
{
pt.x = (short)LOWORD(lParam);
pt.y = (short)HIWORD(lParam);
GetClientRect(hwnd, &rect);
InflateRect(&rect,
-GetSystemMetrics(SM_CXEDGE),
-GetSystemMetrics(SM_CYEDGE));
rect.left = rect.right - GetSystemMetrics(SM_CXVSCROLL);
if(PtInRect(&rect, pt))
{
/* we *should* call SetCapture, but the ComboBox does it for us */
fMouseDown = TRUE;
fButtonDown = TRUE;
InvalidateRect(hwnd, 0, 0);
}
}
break;
/* mouse has moved. Check to see if it is in/out of the drop-arrow */
case WM_MOUSEMOVE:
{
pt.x = (short)LOWORD(lParam);
pt.y = (short)HIWORD(lParam);
if(fMouseDown && (wParam & MK_LBUTTON))
{
GetClientRect(hwnd, &rect);
InflateRect(&rect, -GetSystemMetrics(SM_CXEDGE), -GetSystemMetrics(SM_CYEDGE));
rect.left = rect.right - GetSystemMetrics(SM_CXVSCROLL);
if(fButtonDown != PtInRect(&rect, pt))
{
fButtonDown = PtInRect(&rect, pt);
InvalidateRect(hwnd, 0, 0);
}
}
}
break;
case WM_LBUTTONUP:
{
if(fMouseDown)
{
/* No need to call ReleaseCapture, the ComboBox does it for us */
fMouseDown = FALSE;
fButtonDown = FALSE;
InvalidateRect(hwnd, 0, 0);
}
}
break;
}
return CallWindowProc(OldComboProc,
hwnd,
msg,
wParam,
lParam);
}
VOID MakeFlatCombo(HWND hwndCombo)
{
LONG OldComboProc;
/* Remember old window procedure */
OldComboProc = GetWindowLongPtr(hwndCombo, GWL_WNDPROC);
SetWindowLongPtr(hwndCombo,
GWL_USERDATA,
OldComboProc);
/* Perform the subclass */
SetWindowLongPtr(hwndCombo,
GWL_WNDPROC,
(LONG_PTR)FlatComboProc);
}