Сообщение WM_HOTKEY не вызывает изменение размера окна в цикле сообщений WinMain ⇐ C++

[Anonymous]

Код: Выделить всё

#ifndef UNICODE
#define UNICODE
#endif

#define HOTKEY_REG_ERR -10

#define HOTKEY_DEC_ID 1
#define HOTKEY_INC_ID 2
#define HOTKEY_CEN_ID 3

#define WND_CHANGE_SIZE 50

#include 

LRESULT CALLBACK WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
LRESULT CALLBACK WindowProcAlt(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
SHORT            ResizeWindow(HWND hwnd, int widthChange, int heightChange);

int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PWSTR pCmdLine, int nCmdShow) {
// Register the window class.
LPCWSTR mainWndClass = L"Sample Window Class ";

WNDCLASS wc = {};

wc.lpfnWndProc   = WindowProc;
wc.hInstance     = hInstance;
wc.lpszClassName = mainWndClass;

RegisterClass(&wc);

// Create the window.

HWND hwnd = CreateWindowEx(
0,                           // Optional window styles.
mainWndClass,                // Window class
L"Learn to Program Windows", // Window text
WS_OVERLAPPEDWINDOW,         // Window style

// Size and position
CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,

NULL,      // Parent window
NULL,      // Menu
hInstance, // Instance handle
NULL       // Additional application data
);

if (hwnd == NULL) {
return 0;
}

ShowWindow(hwnd, nCmdShow);

// Register hotkeys

BOOL resultOne   = 0;
BOOL resultTwo   = 0;
BOOL resultThree = 0;

if (!RegisterHotKey(NULL, HOTKEY_DEC_ID, MOD_CONTROL | MOD_SHIFT, '1')) {
resultOne = -1;
}
if (!RegisterHotKey(NULL, HOTKEY_INC_ID, MOD_CONTROL | MOD_SHIFT, '2')) {
resultTwo = -2;
}
if (!RegisterHotKey(NULL, HOTKEY_CEN_ID, MOD_CONTROL | MOD_SHIFT, '3')) {
resultThree = -3;
}

// Run the message loop

MSG msg = {};

while (GetMessage(&msg, NULL, 0, 0) > 0) {
UINT messageCode = msg.message;
TranslateMessage(&msg);
DispatchMessage(&msg);
}

return 0;
}

LRESULT CALLBACK WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam) {
switch (uMsg) {
case WM_DESTROY:
PostQuitMessage(0);
return 0;

case WM_PAINT: {
PAINTSTRUCT ps;
HDC         hdc = BeginPaint(hwnd, &ps);

// All painting occurs here, between BeginPaint and EndPaint.

FillRect(hdc, &ps.rcPaint, (HBRUSH) (COLOR_WINDOW + 1));

EndPaint(hwnd, &ps);
}
return 0;

case WM_HOTKEY:
switch (wParam) {
case HOTKEY_DEC_ID:
ResizeWindow(hwnd, -WND_CHANGE_SIZE, -WND_CHANGE_SIZE);
break;

case HOTKEY_INC_ID:
ResizeWindow(hwnd, WND_CHANGE_SIZE, WND_CHANGE_SIZE);
break;

case HOTKEY_CEN_ID:
break;

default:
break;
}
return 0;
}
return DefWindowProc(hwnd, uMsg, wParam, lParam);
}

SHORT ResizeWindow(HWND hwnd, int widthChange, int heightChange) {
if (hwnd == NULL) {
return -1;
}
int  containerWidth, containerHeight, newWndWidth, newWndHeight, x, y;
RECT rect;
if (GetWindowRect(hwnd, &rect)) {
RECT workArea = {};

SystemParametersInfo(SPI_GETWORKAREA, NULL, &workArea, NULL);

containerWidth  = workArea.right - workArea.left;
containerHeight = workArea.bottom - workArea.top;

newWndWidth  = rect.right - rect.left + widthChange;
newWndHeight = rect.bottom - rect.top + heightChange;

x = (containerWidth - newWndWidth) / 2;
y = (containerHeight - newWndHeight) / 2;

MoveWindow(hwnd, x, y, newWndWidth, newWndHeight, TRUE);
} else {
// std::cerr 

Подробнее здесь: [url]https://stackoverflow.com/questions/78665013/wm-hotkey-message-not-triggering-window-resize-in-winmain-message-loop[/url]