Files
Program-Manager-II/progmgr/desktop.c

136 lines
3.3 KiB
C

/* * * * * * * *\
DESKTOP.C -
Copyright (c) 2023 freedom7341, Freedom Desktop
DESCRIPTION -
Program Manager's desktop window.
Only visible as the default shell.
LICENSE INFORMATION -
MIT License, see LICENSE.txt in the root folder
\* * * * * * * */
/* Headers */
#include "progmgr.h"
#include "resource.h"
// #define WIN32_LEAN_AND_MEAN
#include <Windows.h>
/* Variables */
HWND hWndDesktop;
RECT rcRoot;
/* Functions */
/* * * *\
CreateDesktopWindow -
Creates the invisible desktop window.
RETURNS -
True if successful, false if unsuccessful.
\* * * */
BOOL CreateDesktopWindow()
{
MSG msg = { 0 };
WNDCLASSEX wc = { 0 };
WCHAR szBuffer[MAX_PATH];
WCHAR szClass[16];
// If we fail, we shouldn't be here anyways.
//if (GetShellWindow())
// return FALSE;
// Get size of the root HWND
GetWindowRect(GetDesktopWindow(), &rcRoot);
// Load the window class string
LoadString(hAppInstance, IDS_DTCLASS, szClass, ARRAYSIZE(szClass));
// Refresh the wallpaper...
SystemParametersInfo(SPI_GETDESKWALLPAPER, MAX_PATH, szBuffer, 0);
SystemParametersInfo(SPI_SETDESKWALLPAPER, 0, szBuffer, SPIF_SENDCHANGE);
// Reset the work area (removes dead-space after switching from another shell)
// May have unintended consequences. Doesn't work with multiple monitors.
SystemParametersInfo(SPI_SETWORKAREA, 0, &rcRoot, SPIF_SENDCHANGE);
// Register the desktop window
wc.cbSize = sizeof(WNDCLASSEX);
wc.lpfnWndProc = DeskWndProc;
wc.hInstance = hAppInstance;
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
wc.hbrBackground = (HBRUSH)(30);
wc.style = CS_NOCLOSE;
wc.lpszClassName = szClass;
if (!RegisterClassEx(&wc))
return FALSE;
if (!CreateWindowEx(WS_EX_TOOLWINDOW, wc.lpszClassName, NULL, WS_VISIBLE,
rcRoot.left, rcRoot.top, rcRoot.right - rcRoot.left, rcRoot.bottom - rcRoot.top,
NULL, NULL, hAppInstance, NULL));
return 2;
while (GetMessage(&msg, NULL, 0, 0) > 0)
{
DispatchMessage(&msg);
}
return TRUE;
}
/* * * *\
DeskWndProc -
Program Manager's desktop window procedure.
RETURNS -
Zero if nothing, otherwise returns the good stuff.
\* * * */
LRESULT CALLBACK DeskWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case WM_CREATE:
// Populate hWndDesktop
hWndDesktop = hWnd;
// Set the window position to shell
SetShellWindow(hWndDesktop);
ShowWindow(hWndDesktop, SW_MAXIMIZE);
// Strip the border from the desktop window
SetWindowLongPtr(hWndDesktop, GWL_STYLE, WS_POPUP);
// Size the window to take up the primary monitor's desktop
SetWindowPos(hWndDesktop, HWND_BOTTOM,
rcRoot.left, rcRoot.top, rcRoot.right - rcRoot.left, rcRoot.bottom - rcRoot.top,
SWP_FRAMECHANGED | SWP_NOACTIVATE);
// Finally, bring Program Manager to the foreground.
SetWindowPos(hWndProgMgr, HWND_TOP,
0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE);
break;
case WM_ACTIVATE:
case WM_DPICHANGED:
case WM_DISPLAYCHANGE:
case WM_DEVICECHANGE:
// Get size of the root HWND
GetWindowRect(GetDesktopWindow(), &rcRoot);
SetWindowPos(hWndDesktop, HWND_BOTTOM,
rcRoot.left, rcRoot.top, rcRoot.right - rcRoot.left, rcRoot.bottom - rcRoot.top,
SWP_NOACTIVATE);
break;
case WM_WINDOWPOSCHANGING:
case WM_SYSCOMMAND:
case WM_COMMAND:
break;
case WM_DESTROY:
case WM_CLOSE:
break;
default:
return DefWindowProc(hWnd, message, wParam, lParam);
}
return 0;
}