Environment: VC6 SP4, W2K SP2
In the process of creating my own shell for Windows I found that having all of the individual elements snap to the edge of the screen very useful. To make this process much easier I put together a small class that provides drop in window snapping. It uses a MFC like class so modifying it to use MFC should be easy. NOTE: For dialog windows use the CSnapDlg instead.
The Features
- Snaps to the edge of the desktop
- Adjusts to screen resolution changes
How it Works
When the mouse is pressed in the non-client area of the window, the position is saved as an offset from the top left corner of the window. Then when the WM_MOVING message is sent it modifies the windows position based on the precalculated offset.
It is quite simple to use. Here is how to use it.
// register class
CTestWnd twWnd;
twWnd.RegisterClass(“CSNAPWNDTEST”,IDI_CSNAPWNDTEST,IDC_CSNAPWNDTEST);
// Perform application initialization:
twWnd.Init(NULL,
“CSnapWnd Test”,
NULL,
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT,
0,
CW_USEDEFAULT,
0,
NULL,
nCmdShow);