Message handling

Message processing

MESSAGEPROC

Most programs get X,Y mouse coordinates from the mouse messages or from the specific API. One tricky way to get the same info, though, is to listen to the Windows message queue using PeekMessage/GetMessage, and retrieve the X,Y coordinates from ANY received message in the pt field. Checking this box makes DxWnd fix the X,Y coordinates in this uncommon situation as well (see the game Uprising).

Filter offending messages

SKIPOFFENDINGMSG ???

In theory, a fullscreen message should not expect several messages that are impossible to receive, such as border sizing, taskbar events and so forth. Some programs are not properly coded to react to such "impossible" messages and may show falfuncions. This flag causes potentially harmful and meaningless messages to be suppressed.

Defaulting offending messages

DEFAULTMESSAGES

While a well-designed windowed program should react to all window system messages, it is possible that a fullscreen program was designed without an appropriate reaction to such unexpected messages, like window stretching. This option makes DxWnd automatically process all these messages that an application might not correctly handle. It should be turned on if operations like window resizing or movement cause crashes or other problems.

Peek all messages in queue

PEEKALLMESSAGES

In Windows 7 and newer, any windowed application MUST empty its message queue. The operating system considers any application that does not do this within a defined timeout period (about 5 seconds) to be malfunctioning, and kills the process (although it keeps displaying the window's contents). Programs developed before Windows 7 didn't take this constraint into account and may easily fail to get messages during processes such as unskippable cutscenes or long calculations. This option periodically empties the system queue, ensuring that the program won't be killed. However, there is a small chance that some events (like mouse clicks) could get lost occasionally and will need to be repeated.

Filter winposchange messages

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Add message pump (Win7 comp.)

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