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cwinapiresource-files

Include doesn't work in a resource file Visual Studio

I'm learning the WinAPI for now... 3 days ? and I'm already facing a problem. Indeed, in order to create a DialogBox, we need to write its template in a resource file ( resource.rc for example ).

Here is my resource.rc:

#include "IDs.h"

#include <windows.h>

DIALOG_HELP DIALOG
    CW_USEDEFAULT, CW_USEDEFAULT, 200, 120
        STYLE WS_OVERLAPPEDWINDOW
        CAPTION "Title"
BEGIN
    DEFPUSHBUTTON "Ok", IDOK, 96, 90, 42, 12
    ICON icone1, -1, 60, 55, 32, 32
    LTEXT "Test DialogBox", -1, 100, 58, 100, 10
END

The thing is that #include seems not to be working as it should.

I got resource.rc(6): error RC2108: expected numerical dialog constant when compiling, as if windows.h was not included and that the compiler didn't know what CW_USEDEFAULT is. When I define CW_USEDEFAULT on my own with a simple #define CW_USEDEFAULT 1, it works, no problem, but it would be getting round the problem.

How could I get this to work ? Thanks

Solution

  • error RC2108: expected numerical dialog constant

    This means you must use a reasonable number (probably 0). CW_USEDEFAULT (which is (int)0x80000000L) is only meaningful for CreateWindow() / CreateWindowEx() WinAPI functions. As the resource compiler neither supports type casts, nor allows negative dialog coordinates, it results in a syntax error.

    Also the style WS_OVERLAPPEDWINDOW should not be used with dialogs. Consider using WS_POPUP-based style instead.