GUI_JPEG_Draw() in routine of the WM_CreateWindow or WM_CreateWindowAsChild not returning 1

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  • GUI_JPEG_Draw() in routine of the WM_CreateWindow or WM_CreateWindowAsChild not returning 1

    I have a large image to print on LCD ( 1024x600 ).
    I am using FreeRTOS for multitasking, when i use GUI_JPEG_Draw() api to print image without any window or frame it is working well, but when i want to use it as a routine of any window or child window, it is failing.

    What would be problem behind this ??

    i am working on STM32F429 board.
    my image size is 783x502 image of 77kB in JPEG. I cannot use GUI_BitDrowmap() because its bitmap file would become of 1.4 MB and i dont have such space to spare it in one image.

    The post was edited 1 time, last by bhaveshshah2310 ().

  • Hi,

    decompressing an image of 783*502 pixels needs app. 96KByte of RAM in case of a non progressive JPEG. I assume there is not enough memory available. May be the WM has taken the available memory for an automatic memory device. Suppressing use of a memory device for that window may helps.

    Regards, Jörg
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