big commit here, desktop stuff mostly, not 100% working yet but progress is progress and i gotta use git

progmgr/desktop.c

@@ -6,4 +6,131 @@
 		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;
+
+}