Hello everyone,
I am creating a image slideshow application, and after running for a few cycles, the slideshow stops until I move my mouse over the window. When I move my mouse over the window, sometimes it runs another cycle and sometimes it only moves to the next image. I would like it to continue running indefinitely and change images after a second.
My main function looks like this:
int WINAPI WinMain(
_In_ HINSTANCE hInstance,
_In_opt_ HINSTANCE hPrevInstance,
_In_ LPSTR lpCmdLine,
_In_ int nCmdShow
)
{
AllocConsole();
freopen("CONOUT$", "w", stdout);
freopen("CONOUT$", "w", stderr);
EnumDisplayMonitors(NULL, NULL, MyInfoEnumProc, 0);
WNDCLASSEX wcex;
wcex.cbSize = sizeof(WNDCLASSEX);
wcex.style = CS_HREDRAW | CS_VREDRAW;
wcex.lpfnWndProc = WndProc;
wcex.cbClsExtra = 0;
wcex.cbWndExtra = 0;
wcex.hInstance = hInstance;
wcex.hIcon = LoadIcon(wcex.hInstance, IDI_APPLICATION);
wcex.hCursor = LoadCursor(NULL, IDC_ARROW);
wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
wcex.lpszMenuName = NULL;
wcex.lpszClassName = szWindowClass;
wcex.hIconSm = LoadIcon(wcex.hInstance, IDI_APPLICATION);
if (!RegisterClassEx(&wcex))
{
MessageBox(NULL,
_T("Call to RegisterClassEx failed!"),
_T(""),
NULL);
return 1;
}
hInst = hInstance;
HWND hWnd = createWindow(hInst);
DWORD Style = WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS;
HWND View1 = CreateWindow(L"STATIC", NULL, Style, 0, 0, windowWidth, windowHeight, hWnd, NULL, hInst, NULL);
SFMLView1.create(View1);
SFMLView1.setMouseCursorVisible(false);
if (!hWnd)
{
MessageBox(NULL,
_T("Call to CreateWindow failed!"),
_T(""),
NULL);
return 1;
}
DEVMODE fullscreenSettings;
bool isChangeSuccessful;
EnumDisplaySettings(NULL, 0, &fullscreenSettings);
fullscreenSettings.dmPelsWidth = 1080;
fullscreenSettings.dmPelsHeight = 720;
fullscreenSettings.dmBitsPerPel = 8;
fullscreenSettings.dmDisplayFrequency = 30;
fullscreenSettings.dmFields = DM_PELSWIDTH |
DM_PELSHEIGHT |
DM_BITSPERPEL |
DM_DISPLAYFREQUENCY;
SetWindowLongPtr(hWnd, GWL_EXSTYLE, WS_EX_APPWINDOW | WS_EX_TOPMOST);
SetWindowLongPtr(hWnd, GWL_STYLE, WS_POPUP | WS_VISIBLE);
SetWindowPos(hWnd, HWND_BOTTOM, windowX, windowY, windowWidth, windowHeight, SWP_SHOWWINDOW); // Z-order set to the bottom so other windows can be displayed above it
isChangeSuccessful = ChangeDisplaySettings(&fullscreenSettings, CDS_FULLSCREEN) == DISP_CHANGE_SUCCESSFUL;
ShowWindow(hWnd, SW_MAXIMIZE);
DWORD dwExStyle = GetWindowLong(hWnd, GWL_EXSTYLE);
dwExStyle &= ~WS_EX_APPWINDOW;
dwExStyle |= WS_EX_TOOLWINDOW;
SetWindowLong(hWnd, GWL_EXSTYLE, dwExStyle);
ShowWindow(hWnd,
nCmdShow);
UpdateWindow(hWnd);
std::string path = "\\";
std::vector<std::string> imagePaths;
for (const auto& entry : fs::directory_iterator(path))
{
if ((lastN(entry.path().string(), 3) == std::string{ "png" } || lastN(entry.path().string(), 3) == std::string{ "jpg" } || lastN(entry.path().string(), 3) == std::string{ "bmp" })
&& entry.exists() && entry.file_size() > 0)
{
imagePaths.push_back(entry.path().string());
}
}
std::cout << imagePaths.at(0) << "\n";
MSG msg;
int index = 0;
sf::Image image;
sf::FileInputStream stream;
sf::Texture texture;
sf::Vector2f targetSize(windowWidth, windowHeight);
while (1) {
if (GetMessage(&msg, NULL, 0, 0) > 0) {
std::cout << &msg << "\n";
TranslateMessage(&msg);
DispatchMessage(&msg);
}
stream.open(imagePaths.at(index));
texture.loadFromStream(stream);
sf::Sprite sprite(texture);
sprite.setScale(
targetSize.x / sprite.getLocalBounds().width,
targetSize.y / sprite.getLocalBounds().height
);
SFMLView1.clear();
SFMLView1.draw(sprite);
SFMLView1.display();
if (index == imagePaths.size() - 1) {
index = 0;
}
else {
index += 1;
}
std::this_thread::sleep_for(std::chrono::seconds(1));
}
return (int)msg.wParam;
}
It appears to get hung up during my main loop. The images are all accessed correctly, because it is able to cycle through all of them a few times before it gets hung up. Any help would be greatly appreciated.
