窗口绘制边框及更新
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#define ZOU_PROCESS_ERROR(condition) if(!(condition)) goto Exit0;
#define ZOU_PROCESS_SUCCESS(condition) if(condition) goto Exit1;
int RedrawWindowFrame(HWND hWnd)
{
int nResult = false;
int nRetCode = false;
CRgn rgMaxFrameRgn;
CRgn rgMinFrameRgn;
CRgn rgInvalidateFrameRgn;
CRect rtWinRect;
CWnd *pWndParent = NULL;
CDC *pDC = NULL;
HWND hWndParent = NULL;
ZOU_PROCESS_ERROR(IsWindow(hWnd));
::GetWindowRect(hWnd, &rtWinRect);
::RedrawWindow(hWnd,
NULL, NULL,
RDW_INTERNALPAINT | RDW_INVALIDATE | RDW_ERASENOW |
RDW_UPDATENOW | RDW_ERASE | RDW_FRAME | RDW_ALLCHILDREN
);
hWndParent = GetParent(hWnd);
if(hWndParent)
{
::RedrawWindow(
hWndParent,
NULL, NULL,
RDW_INTERNALPAINT | RDW_INVALIDATE | RDW_ERASENOW |
RDW_UPDATENOW | RDW_ERASE | RDW_FRAME | RDW_ALLCHILDREN
);
};
nResult = true;
Exit0:
return nResult;
}
int DrawWindowFrame(HWND hWnd)
{
int nResult = false;
int nRetCode = false;
static CRect rtWinRect;
static CDC DC;
static CPen pen(PS_SOLID, 3, RGB(255,0,0));
static CPen *pOldPen = NULL;
static HDC hDC = NULL;
ZOU_PROCESS_ERROR(IsWindow(hWnd));
::GetWindowRect(hWnd, &rtWinRect);
hDC = ::GetWindowDC(hWnd);
ZOU_PROCESS_ERROR(hDC);
DC.Attach(hDC);
pOldPen = DC.SelectObject(&pen);
DC.MoveTo(0, 0);
DC.LineTo(rtWinRect.Width(), 0);
DC.LineTo(rtWinRect.Width(), rtWinRect.Height());
DC.LineTo(0, rtWinRect.Height());
DC.LineTo(0, 0);
DC.SelectObject(pOldPen);
DC.DeleteDC();
::ReleaseDC(hWnd, hDC);
nResult = false;
Exit0:
return nResult;
}
