How to call the function GetWindowRect of Windows API in matlab

Question

Yuhao Sun 2018-10-18

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/424646-how-to-call-the-function-getwindowrect-of-windows-api-in-matlab

回答： TIAN ZHU 2022-2-26

Hello, everyone! I want to get the screen position of a program outside the Matlab. I found the GetWindowRect function in windows API could help me finish that. The introduction of this function from msdn is shown below: https://docs.microsoft.com/en-us/windows/desktop/api/winuser/nf-winuser-getwindowrect.

In addition, I have got another very nice work which has accomplished some relevant function: https://uk.mathworks.com/matlabcentral/fileexchange/49149-matlab-loadlibrary-user32-dll-for-windows-functions-in-one-class?s_tid=prof_contriblnk

The problem is that I cannot convert the simple struct datatype in the matlab to the C struct LPRECT in GetWindowRect funtion parameters. I tried the following code using libstruct

    RECT.left = int32(0);
    RECT.top = int32(0);
    RECT.right = int32(0); 
    RECT.bottom = int32(0); 
    RECT1 = libstruct('_RECTL',RECT);
    calllib('WinUser32Lib', 'GetWindowRect', WHand, RECT1);
    %   Load System Library Procedure Starts above...
       %  BOOL GetWindowRect(hWnd, LPRECT);
     fcns.name{4} = 'GetWindowRect';
     fcns.calltype{4} = 'cdecl';
     fcns.LHS{4} = 'voidPtr';
     fcns.RHS{4} = {'voidPtr','voidPtr'};
    %   Initiating Function Call Parameter Mapping above...