[轉載]無邊框對話框改變大小2008-07-11 07:13 P.M.實現效果需要處理以下這三個消息:

WM_NCHITTEST WM_SETCURSOR WM_NCLBUTTONDOWN

消息處理函數:

UINT CXXXDlg::OnNcHitTest(UINT nHitTest, CPoint point)
...{
?CRect rect;
?GetWindowRect(&rect);
?if(point.x <= rect.left+3)
??? return HTLEFT;
?else if(point.x >= rect.right-3)
??? return HTRIGHT;
?else if(point.y <= rect.top+3)
??? return HTTOP;
?else if(point.y >= rect.bottom-3)
??? return HTBOTTOM;
?else if(point.x <= rect.left+10 && point.y <= rect.top+10)
??? return HTTOPLEFT;
?else if(point.x >= rect.right-10 && point.y <= rect.top+10)
??? return HTTOPRIGHT;
?else if(point.x <= rect.left+10 && point.y >= rect.bottom-10)
??? return HTBOTTOMLEFT;
?else if(point.x >= rect.right-10 && point.y >= rect.bottom-10)
??? return HTBOTTOMRIGHT;
?
??? return 0;
}

BOOL CXXXDlg::OnSetCursor(HWND hWnd, UINT nHitTest, UINT message)
...{
??? if(nHitTest == HTCAPTION || nHitTest == HTSYSMENU ||
??????? nHitTest == HTMENU || nHitTest == HTCLIENT)
?? ...{
??????? SetCursor(LoadCursor(NULL, MAKEINTRESOURCE(IDC_ARROW)));
??? }
?? else if(nHitTest == HTTOP || nHitTest == HTBOTTOM)
?? ...{
??????? SetCursor(LoadCursor(NULL, MAKEINTRESOURCE(IDC_SIZENS)));
??? }
?? else if(nHitTest == HTLEFT || nHitTest == HTRIGHT)
?? ...{
??????? SetCursor(LoadCursor(NULL, MAKEINTRESOURCE(IDC_SIZEWE)));
??? }
?? else if(nHitTest == HTTOPLEFT || nHitTest == HTBOTTOMRIGHT)
?? ...{
??????? SetCursor(LoadCursor(NULL, MAKEINTRESOURCE(IDC_SIZENWSE)));
??? }
?? else if(nHitTest == HTTOPRIGHT || nHitTest == HTBOTTOMLEFT)
?? ...{
??????? SetCursor(LoadCursor(NULL, MAKEINTRESOURCE(IDC_SIZENESW)));
??? }
?? else
?? ...{
??????? SetCursor(LoadCursor(NULL, MAKEINTRESOURCE(IDC_ARROW)));
???? }
}

void CXXXDlg::OnNcLButtonDown(UINT nHitTest, CPoint point)
...{
?? if(nHitTest == HTTOP)
??????? SendMessage( WM_SYSCOMMAND, SC_SIZE | WMSZ_TOP, MAKELPARAM(point.x, point.y));
?? else if(nHitTest == HTBOTTOM)
??????? SendMessage( WM_SYSCOMMAND, SC_SIZE | WMSZ_BOTTOM, MAKELPARAM(point.x, point.y));
?? else if(nHitTest == HTLEFT)
??????? SendMessage( WM_SYSCOMMAND, SC_SIZE | WMSZ_LEFT, MAKELPARAM(point.x, point.y));
?? else if(nHitTest == HTRIGHT)
??????? SendMessage( WM_SYSCOMMAND, SC_SIZE | WMSZ_RIGHT, MAKELPARAM(point.x, point.y));
?? else if(nHitTest == HTTOPLEFT)
??????? SendMessage( WM_SYSCOMMAND, SC_SIZE | WMSZ_TOPLEFT, MAKELPARAM(point.x, point.y));
?? else if(nHitTest == HTTOPRIGHT)
??????? SendMessage( WM_SYSCOMMAND, SC_SIZE | WMSZ_TOPRIGHT, MAKELPARAM(point.x, point.y));
?? else if(nHitTest == HTBOTTOMLEFT)
??????? SendMessage( WM_SYSCOMMAND, SC_SIZE | WMSZ_BOTTOMLEFT, MAKELPARAM(point.x, point.y));
?? else if(nHitTest == HTBOTTOMRIGHT)
??????? SendMessage(WM_SYSCOMMAND, SC_SIZE | WMSZ_BOTTOMRIGHT, MAKELPARAM(point.x, point.y));
}
?

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