I'm trying to call the SendMessage function as defined in the windows api.
Unfortunately every attempt to call it results in an error.
Initially I tried calling the function directly assuming that it would have been
imported into my applications namespace after:
" import std.c.windows.windows; "
this failed. So I tried:
" extern (Windows) void SendMessage (HWND, uint, WPARAM, LPARAM); "
this got the problem past the compiler, but generated an error during linkage.
At this stage I'm open for alternatives.
I'm trying to update a client window after my program processes WM_CHAR
messages. I was trying to use the SendMessage function to trigger WM_PAINT
events.
Any help would be appreciated.
thanks,
lee

llee wrote:
> I'm trying to call the SendMessage function as defined in the windows api.

Because there's no such function. It's SendMessageA (the SDK headers define SendMessage as a macro).

> Unfortunately every attempt to call it results in an error.
> Initially I tried calling the function directly assuming that it would have been
> imported into my applications namespace after: " import std.c.windows.windows; "
> this failed. So I tried:
> " extern (Windows) void SendMessage (HWND, uint, WPARAM, LPARAM); "

Try this
	extern(Windows) LRESULT SendMessageA(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
or for the Unicode version use
	extern(Windows) LRESULT SendMessageW(HWND hWnd, UINT wMsg, WPARAM wParam, LPARAM lParam);


> this got the problem past the compiler, but generated an error during linkage.
> At this stage I'm open for alternatives.
> I'm trying to update a client window after my program processes WM_CHAR
> messages. I was trying to use the SendMessage function to trigger WM_PAINT
> events. Any help would be appreciated.
> thanks, lee
> 
> 
> 

John C wrote:
> llee wrote:
> 
>> I'm trying to call the SendMessage function as defined in the windows api.
> 
> 
> Because there's no such function. It's SendMessageA (the SDK headers define SendMessage as a macro).
> 
>> Unfortunately every attempt to call it results in an error.
>> Initially I tried calling the function directly assuming that it would have been
>> imported into my applications namespace after: " import std.c.windows.windows; "
>> this failed. So I tried:
>> " extern (Windows) void SendMessage (HWND, uint, WPARAM, LPARAM); "
> 
> 
> Try this
>     extern(Windows) LRESULT SendMessageA(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
> or for the Unicode version use
>     extern(Windows) LRESULT SendMessageW(HWND hWnd, UINT wMsg, WPARAM wParam, LPARAM lParam);
> 
> 

and/or

version( unicode )
{
   alias SendMessageW SendMessage;
}
else
{
    aliasm SendMessageA SendMessage;
}



>> this got the problem past the compiler, but generated an error during linkage.
>> At this stage I'm open for alternatives.
>> I'm trying to update a client window after my program processes WM_CHAR
>> messages. I was trying to use the SendMessage function to trigger WM_PAINT
>> events. Any help would be appreciated.
>> thanks, lee
>>
>>
>>