LRESULT CALLBACK WndProcAbout(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
const WCHAR * url;
POINT pt;
switch (message)
{
case WM_CREATE:
assert(!gHwndAbout);
break;
case WM_ERASEBKGND:
// do nothing, helps to avoid flicker
return TRUE;
case WM_PAINT:
OnPaintAbout(hwnd);
break;
case WM_SETCURSOR:
if (GetCursorPosInHwnd(hwnd, pt)) {
StaticLinkInfo linkInfo;
if (GetStaticLink(gLinkInfo, pt.x, pt.y, &linkInfo)) {
CreateInfotipForLink(linkInfo);
SetCursor(gCursorHand);
return TRUE;
}
}
ClearInfotip();
return DefWindowProc(hwnd, message, wParam, lParam);
case WM_LBUTTONDOWN:
gClickedURL = GetStaticLink(gLinkInfo, GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam));
break;
case WM_LBUTTONUP:
url = GetStaticLink(gLinkInfo, GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam));
if (url && url == gClickedURL)
LaunchBrowser(url);
break;
case WM_CHAR:
if (VK_ESCAPE == wParam)
DestroyWindow(hwnd);
break;
case WM_DESTROY:
ClearInfotip();
assert(gHwndAbout);
gHwndAbout = NULL;
break;
default:
return DefWindowProc(hwnd, message, wParam, lParam);
}
return 0;
}
// note: all derived classes must call Control::NotifyMouseLeave()
// from their own NotifyMouseLeave().
void Control::NotifyMouseLeave()
{
// hide url tooltip
HwndWrapper *hw = GetRootHwndWnd(this);
HWND hwndParent = hw->hwndParent;
ClearInfotip(hwndParent);
}