87 lines
2.6 KiB
C
87 lines
2.6 KiB
C
// 14 may 2015
|
|
#include "uipriv_windows.h"
|
|
|
|
// The utility window is a special window that performs certain tasks internal to libui.
|
|
// It is not a message-only window, and it is always hidden and disabled.
|
|
// Its roles:
|
|
// - It is the initial parent of all controls. When a control loses its parent, it also becomes that control's parent.
|
|
// - It handles WM_QUERYENDSESSION and console end session requests.
|
|
// - It has a timer to run resizes.
|
|
// - It handles WM_WININICHANGE and forwards the message to any child windows that request it.
|
|
|
|
#define utilWindowClass L"libui_utilWindowClass"
|
|
|
|
HWND utilWindow;
|
|
|
|
#define resizeTimerID 15 /* a safe number */
|
|
#define resizeTimerInterval 15
|
|
|
|
static LRESULT CALLBACK utilWindowWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
|
|
{
|
|
LRESULT lResult;
|
|
|
|
if (handleParentMessages(hwnd, uMsg, wParam, lParam, &lResult) != FALSE)
|
|
return lResult;
|
|
switch (uMsg) {
|
|
case WM_QUERYENDSESSION:
|
|
case msgConsoleEndSession:
|
|
// TODO block handler
|
|
if (shouldQuit()) {
|
|
uiQuit();
|
|
return TRUE;
|
|
}
|
|
return FALSE;
|
|
case WM_TIMER:
|
|
if (wParam != resizeTimerID)
|
|
break;
|
|
if (SetTimer(utilWindow, resizeTimerID, resizeTimerInterval, NULL) == 0)
|
|
logLastError("error resetting resize timer in utilWindowWndProc()");
|
|
doResizes();
|
|
return 0;
|
|
case WM_WININICHANGE:
|
|
issueWM_WININICHANGE(wParam, lParam);
|
|
return 0;
|
|
}
|
|
return DefWindowProcW(hwnd, uMsg, wParam, lParam);
|
|
}
|
|
|
|
const char *initUtilWindow(HICON hDefaultIcon, HCURSOR hDefaultCursor)
|
|
{
|
|
WNDCLASSW wc;
|
|
|
|
ZeroMemory(&wc, sizeof (WNDCLASSW));
|
|
wc.lpszClassName = utilWindowClass;
|
|
wc.lpfnWndProc = utilWindowWndProc;
|
|
wc.hInstance = hInstance;
|
|
wc.hIcon = hDefaultIcon;
|
|
wc.hCursor = hDefaultCursor;
|
|
wc.hbrBackground = (HBRUSH) (COLOR_BTNFACE + 1);
|
|
if (RegisterClass(&wc) == 0)
|
|
return "registering utility window class";
|
|
|
|
utilWindow = CreateWindowExW(0,
|
|
utilWindowClass, L"libui utility window",
|
|
WS_OVERLAPPEDWINDOW,
|
|
0, 0, 100, 100,
|
|
NULL, NULL, hInstance, NULL);
|
|
if (utilWindow == NULL)
|
|
return "creating utility window";
|
|
// and just to be safe
|
|
EnableWindow(utilWindow, FALSE);
|
|
|
|
if (SetTimer(utilWindow, resizeTimerID, resizeTimerInterval, NULL) == 0)
|
|
return "starting resize timer";
|
|
|
|
return NULL;
|
|
}
|
|
|
|
void uninitUtilWindow(void)
|
|
{
|
|
if (KillTimer(utilWindow, resizeTimerID) == 0)
|
|
logLastError("error stopping resize timer in uninitUtilWindow()");
|
|
if (DestroyWindow(utilWindow) == 0)
|
|
logLastError("error destroying utility window in uninitUtilWindow()");
|
|
if (UnregisterClass(utilWindowClass, hInstance) == 0)
|
|
logLastError("error unregistering utility window class in uninitUtilWindow()");
|
|
}
|