void OnMenuAbout()
{
if (gHwndAbout) {
SetActiveWindow(gHwndAbout);
return;
}
if (!gAtomAbout) {
WNDCLASSEX wcex;
FillWndClassEx(wcex, ghinst, ABOUT_CLASS_NAME, WndProcAbout);
wcex.hIcon = LoadIcon(ghinst, MAKEINTRESOURCE(IDI_SUMATRAPDF));
gAtomAbout = RegisterClassEx(&wcex);
CrashIf(!gAtomAbout);
}
gHwndAbout = CreateWindow(
ABOUT_CLASS_NAME, ABOUT_WIN_TITLE,
WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU,
CW_USEDEFAULT, CW_USEDEFAULT,
CW_USEDEFAULT, CW_USEDEFAULT,
NULL, NULL,
ghinst, NULL);
if (!gHwndAbout)
return;
// get the dimensions required for the about box's content
RectI rc;
PAINTSTRUCT ps;
HDC hdc = BeginPaint(gHwndAbout, &ps);
UpdateAboutLayoutInfo(gHwndAbout, hdc, &rc);
EndPaint(gHwndAbout, &ps);
rc.Inflate(ABOUT_RECT_PADDING, ABOUT_RECT_PADDING);
// resize the new window to just match these dimensions
WindowRect wRc(gHwndAbout);
ClientRect cRc(gHwndAbout);
wRc.dx += rc.dx - cRc.dx;
wRc.dy += rc.dy - cRc.dy;
MoveWindow(gHwndAbout, wRc.x, wRc.y, wRc.dx, wRc.dy, FALSE);
ShowWindow(gHwndAbout, SW_SHOW);
}
static bool CreatePropertiesWindow(HWND hParent, PropertiesLayout* layoutData)
{
CrashIf(layoutData->hwnd);
HWND hwnd = CreateWindow(
PROPERTIES_CLASS_NAME, PROPERTIES_WIN_TITLE,
WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU,
CW_USEDEFAULT, CW_USEDEFAULT,
CW_USEDEFAULT, CW_USEDEFAULT,
NULL, NULL,
ghinst, NULL);
if (!hwnd)
return false;
layoutData->hwnd = hwnd;
layoutData->hwndParent = hParent;
ToggleWindowStyle(hwnd, WS_EX_LAYOUTRTL | WS_EX_NOINHERITLAYOUT, IsUIRightToLeft(), GWL_EXSTYLE);
// get the dimensions required for the about box's content
RectI rc;
PAINTSTRUCT ps;
HDC hdc = BeginPaint(hwnd, &ps);
UpdatePropertiesLayout(layoutData, hdc, &rc);
EndPaint(hwnd, &ps);
// resize the new window to just match these dimensions
// (as long as they fit into the current monitor's work area)
WindowRect wRc(hwnd);
ClientRect cRc(hwnd);
RectI work = GetWorkAreaRect(WindowRect(hParent));
wRc.dx = min(rc.dx + wRc.dx - cRc.dx, work.dx);
wRc.dy = min(rc.dy + wRc.dy - cRc.dy, work.dy);
MoveWindow(hwnd, wRc.x, wRc.y, wRc.dx, wRc.dy, FALSE);
CenterDialog(hwnd, hParent);
ShowWindow(hwnd, SW_SHOW);
return true;
}