win32_messagebox
A MoonBit FFI demo for calling the Win32 MessageBoxW API.
ffi
win32
messagebox
windows
moon add justjavac/win32_messagebox@0.1.3
Download zipAuthor
Version
0.1.3
License
MIT
Last updated
2 months ago
Downloads
23
Dependencies
- justjavac/ffi0.2.3
README#win32_messagebox
A MoonBit native FFI demo for calling the Windows MessageBoxW API.
#Install
moon add justjavac/win32_messagebox#Usage
This package is a native-only demo executable. On Windows, run:
moon run src --target nativeThe package exports a direct MessageBoxW binding:
let result = message_box(
0,
@ffi.to_wstr("Hello from MoonBit"),
@ffi.to_wstr("MoonBit Message Box"),
0x00000000,
)MessageBoxW expects UTF-16 strings. Convert MoonBit strings with
@ffi.to_wstr before passing them to message_box.
#Platform
The package is configured for the MoonBit native target and links against
Windows user32.lib. It can be type-checked on other operating systems, but the
demo can only run where the Win32 User32 API and linker library are available.
#License
MIT
#message_box
fn message_box(hWnd : Int, lpText : Bytes, lpCaption : Bytes, uType : Int) -> IntFFI binding to the Windows MessageBoxW API.
MessageBoxW displays a modal dialog box containing application-specific
text, an optional icon, and one or more buttons. It accepts UTF-16 wide
strings, so callers should convert MoonBit strings with @ffi.to_wstr.
Parameters:
- hWnd: owner window handle, or 0 for no owner.
- lpText: UTF-16 message text.
- lpCaption: UTF-16 dialog title.
- uType: Windows MessageBox flags such as MB_OK, MB_YESNO, or icon flags.
Common return values:
- 1: OK.
- 2: Cancel.
- 6: Yes.
- 7: No.
- 0: API call failed.
Example:
let result = message_box(
0,
@ffi.to_wstr("Save changes before closing?"),
@ffi.to_wstr("Unsaved Changes"),
0x00000023,
)Source Files
A MoonBit FFI demo for calling the Win32 MessageBoxW API.
ffiwin32messageboxwindows
0.1.3
MIT
Updated 2 months ago
23 downloadsDependencies
- justjavac/ffi0.2.3