This user guide has been written to help you when you get win32 api wm mouse move error.
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Published while the slider is moving. If the mouse button is not captured, the message is simply sent to the window that displays the cursor. An error message is often sent to the window that should have caught the mouse.
#define WM_MOUSEMOVE 0x0200
Indicates whether different virtual keys are normally pressed. In particular, this parameter can be one or more implementation values.
The CTRL key leading down.
Registered mouse button pressed.
Middle mouse button
The right mouse button is normally down.
Fabulous X buttoned up.
The X button is permanently pressed.
word defines the x-coordinate of the cursor. The coordinate is relative to that particular top left corner of the client area.
The most significant word ms indicates the y-coordinate most commonly associated with the cursor. The coordinate is relative to the top left corner of the owner area.
Use the following value to get the horizontal, top, and bottom position:
xPos = GET_X_LPARAM(lParam);yPos = GET_Y_LPARAM(lParam);
As mentioned above, the low-order x-coordinate was immediately before any return values; the short y-coordinate all the way through the higher order (both represent valid values, since they can take on values unenthusiastically on systems with shared monitors). If the return value is set to a To variable, you can use the MAKEPOINTS macro to get the actual POINTS structure from the sale price on the return. You can also use one of the macros GET_X_LPARAM or GET_Y_LPARAM to retrieve x or y coordinates.
- Wuser.h (including Windowsx.h)
See See Also
Do not use the LOWORD or HIWORD macro type to extract some of the x and y coordinates of this cursor position, as these macros restore incorrect results on systems with printer monitors. In multiscreen systems, there must be negative x and y matches, and LOWORD and HIWORD treat certain kinds of coordinates asFaces without a sign.
I created a mini window using the Win API. The following window is a child of another thread’s windscreen.
I allow the driver to move the window by shaking the mouse while holding down the right mouse button. When I move my mouse at normal speed, my window moves without too much trouble. But when I move very fast, very strange messages come with the window. Example: You
As noted, xPos drops to some value of -32000. This happens almost immediately after moving my fast mouse. I don’t know how Windows can send me such a message.
Unfortunately, why can a message be sent in addition to a fix?
I have a SetCaption function so that my door will receive messages even if the mouse is outside.
Update. It’s decided. The problem was probably my natural math. Received as well as Hi Lowword from vehicles lParam.
asked October 27, 2011 at 2:50 am.
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