mirror of
https://git.tartarus.org/simon/putty.git
synced 2025-01-09 09:27:59 +00:00
c674b2da4f
Previously, the timing.c subsystem worked in Windows PuTTY by means of scheduling WM_TIMER messages to be sent to the terminal window. Now it uses a separate hidden window instead, and all the machinery for handling that window lives on its own in windows/utils/gui-timing.c. Most immediately, this removes a use of wgs.term_hwnd that will become awkward when I move that structure in a following commit. But also, it will make it easier to add the same timing subsystem to unrelated GUI programs, such as Windows Pageant: if we ever decide to implement automatic deletion or re-encryption of unused keys after a timeout, this will help make that easier.
57 lines
1.5 KiB
C
57 lines
1.5 KiB
C
#include "putty.h"
|
|
|
|
#define TIMING_CLASS_NAME "PuTTYTimerWindow"
|
|
#define TIMING_TIMER_ID 1234
|
|
static long timing_next_time;
|
|
static HWND timing_hwnd;
|
|
|
|
static LRESULT CALLBACK TimingWndProc(HWND hwnd, UINT message,
|
|
WPARAM wParam, LPARAM lParam)
|
|
{
|
|
switch (message) {
|
|
case WM_TIMER:
|
|
if ((UINT_PTR)wParam == TIMING_TIMER_ID) {
|
|
unsigned long next;
|
|
|
|
KillTimer(hwnd, TIMING_TIMER_ID);
|
|
if (run_timers(timing_next_time, &next)) {
|
|
timer_change_notify(next);
|
|
} else {
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
return DefWindowProc(hwnd, message, wParam, lParam);
|
|
}
|
|
|
|
void setup_gui_timing(void)
|
|
{
|
|
WNDCLASS wndclass;
|
|
|
|
memset(&wndclass, 0, sizeof(wndclass));
|
|
wndclass.lpfnWndProc = TimingWndProc;
|
|
wndclass.hInstance = hinst;
|
|
wndclass.lpszClassName = TIMING_CLASS_NAME;
|
|
|
|
RegisterClass(&wndclass);
|
|
|
|
timing_hwnd = CreateWindow(
|
|
TIMING_CLASS_NAME, "PuTTY: hidden timing window",
|
|
WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT,
|
|
100, 100, NULL, NULL, hinst, NULL);
|
|
ShowWindow(timing_hwnd, SW_HIDE);
|
|
}
|
|
|
|
void timer_change_notify(unsigned long next)
|
|
{
|
|
unsigned long now = GETTICKCOUNT();
|
|
long ticks;
|
|
if (now - next < INT_MAX)
|
|
ticks = 0;
|
|
else
|
|
ticks = next - now;
|
|
KillTimer(timing_hwnd, TIMING_TIMER_ID);
|
|
SetTimer(timing_hwnd, TIMING_TIMER_ID, ticks, NULL);
|
|
timing_next_time = next;
|
|
}
|