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wnd.cpp
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wnd.cpp
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#include "stdafx.h"
#include "wnd.h"
const wchar_t kClassName[] = L"TrayIconWindowClass";
void register_class(HINSTANCE hInstance, WNDPROC WndProc) {
WNDCLASSEX wcex;
wcex.cbSize = sizeof(WNDCLASSEX);
wcex.style = CS_HREDRAW | CS_VREDRAW;
wcex.lpfnWndProc = (WNDPROC)WndProc;
wcex.cbClsExtra = 0;
wcex.cbWndExtra = 0;
wcex.hInstance = hInstance;
wcex.hIcon = nullptr;
wcex.hCursor = LoadCursor(nullptr, IDC_ARROW);
wcex.hbrBackground = (HBRUSH)(CTLCOLOR_DLG);
wcex.lpszMenuName = nullptr;
wcex.lpszClassName = kClassName;
wcex.hIconSm = nullptr;
BOOL rc = RegisterClassEx(&wcex);
assert(rc);
}
void unregister_class(HINSTANCE hInstance) {
BOOL rc = UnregisterClass(kClassName, hInstance);
assert(rc);
}
HWND create_window(HINSTANCE hInstance, int nCmdShow)
{
constexpr int kWidth = 400;
constexpr int kHeight = 200;
int w = GetSystemMetrics(SM_CXSCREEN);
int h = GetSystemMetrics(SM_CYSCREEN);
int x = 0;
int y = 0;
HWND wnd = CreateWindow(
kClassName,
L"TrayIcon",
WS_OVERLAPPEDWINDOW,
x + (w - 400) / 2,
y + (h - 200) / 2,
400,
200,
NULL,
NULL,
hInstance,
NULL);
if (wnd)
{
ShowWindow(wnd, nCmdShow);
UpdateWindow(wnd);
}
return wnd;
}